Whew!
Labels: blog
Ramblings of a Curiosity Seeker
Labels: blog

Labels: climate change, deep future, global warming

Labels: mass extinction, oceans, paleoclimate, PETM
It appears that chemical warfare has been around a lot longer than poison arrows, mustard gas or nerve weapons – about 100 million years, give or take a little.
A new study by researchers at Oregon State University has identified a soldier beetle, preserved almost perfectly in amber, which was in the process of using chemical repellants to fight off an attacker when an oozing flow of sap preserved the struggle for eternity.
The discovery is the earliest fossil record of a chemical defense response, scientists say, and indicates that this type of protective mechanism – now common in the insect world and among other animal species – has been around for more than 100 million years. It’s a sophisticated form of defense that clearly was in good working order while dinosaurs still roamed the Earth.
The findings were just published in the Journal of Chemical Ecology.
“The chance of these circumstances all coming together at the exact right second was pretty slim,” said George Poinar, Jr., a courtesy professor of zoology at OSU and one of the world’s leading experts on distant life forms preserved in amber. “You have a prehistoric insect being attacked, using its defenses to ward off the predator and the whole event becoming captured in action as sap flowed down a tree. It’s quite remarkable.”
The beetle was a small insect, about one-quarter inch long, which may have been in the process of becoming lunch for a giant roach or some other larger insect that apparently was 2-3 inches long, judging by the length of an antenna from the other insect also found in the specimen. The other insect either escaped the sap or was preserved in a different piece of amber, in these samples of Burmese amber that came from the Hukawng Valley in Myanmar.
“This particular insect is now extinct, but the broader family of soldier beetles still exists, and they still use this same type of chemical defense mechanism,” Poinar said. “That this type of defense has been preserved through 100 million years of evolution is evidence that it works pretty well.”
At the time of this event in the Early Cretaceous Period, huge animals such as dinosaurs still dominated the Earth, but scurrying beneath them were early mammals and large numbers of terrestrial invertebrates, such as these insects. Soldier beetles, then as now, were omnivores that lived on things like aphids, other tiny insects or plant pollen. Among other things, this finding pushes back the known existence of this type of beetle by about 60 million years. And at that distant time, they had already evolved ways to defend themselves.
“This beetle was able to exude a sticky chemical substance that was irritating to potential predators, and caused them to go away or leave it alone,” Poinar said. “It could even conserve its excretions and control the direction of the defense; in other words, produce the substance only on its left rear side if that was where the attack was coming from.”
Labels: cretaceous, fossils, insects, mesozoic

Labels: humor
In the past 25 years immigration has re-emerged as a driving force in the size and composition of U.S. cities. This paper describes the effects of immigration on overall population growth and the skill composition of cities, focusing on the connection between immigrant inflows and the relative number of less-skilled workers in the local population. The labor market impacts of immigrant arrivals can be offset by outflows of natives and earlier generations of immigrants. Empirically, however, these offsetting flows are small, so most cities with higher rates of immigration have experienced overall population growth and a rising share of the less-skilled. These supply shifts are associated with a modest widening of the wage gap between more- and less-skilled natives, coupled with a positive effect on average native wages. Beyond the labor market, immigrant arrivals also affect rents and housing prices, government revenues and expenses, and the composition of neighborhoods and schools. The effect on rents is the same magnitude as the effect on average wages, implying that the average “rent burden” (the ratio of rents to incomes) is roughly constant. The local fiscal effects of increased immigration also appear to be relatively small. The neighborhood and school externalities posed by the presence of low-income and minority families may be larger, and may be a key factor in understanding native reactions to immigration.
Labels: economics, immigration, USA
“Today, the question is not on the agenda whether Ukraine can become a part of any other state. Today, the question is whether the Ukrainian territorial integrity will be maintained. In this case, independence and threat acquire a kind of another meaning. For instance, many people believe that involvement of Ukraine into NATO is a threat to Ukraine’s independence. Others, on the contrary, think that if Ukraine remains outside NATO, it will fall under Russia’s influence again. There are many different notions,” the analyst concluded.
Labels: Europe, international politics, Ukraine, USA
Labels: meme

You're Jurassic Park!
by Michael Crichton
Take the Book Quiz
at the Blue Pyramid.
I blame James. Making me into a bad, bad book! bah!
Labels: humor

Labels: arctic, climate change, global warming
Labels: books, Late Triassic Mass Extinction, mass extinction, paleontology
Global warming is set to cut China's annual grain harvest by up to 10 percent by 2030, placing extra burden on its shrinking farmland, state press reported Thursday.
Zheng Guoguang, head of the State Meteorological Administration, said the impact of global warming means that China will likely need an extra 10 million hectares (247 million acres) of farmland by 2030.
The year 2030 is a key date because that is when the nation's population is expected to peak at 1.5 billion people, up from just over 1.3 billion today, requiring an extra 100 million tons of food to feed them.
"Global warming may cause the grain harvest to fall by five to 10 percent, that is by 30-50 million tons, by 2030," the China Daily quoted Zheng as saying.
[...]
Chinese authorities have issued a series of reports and studies in recent months outlining the grim impact global warming will have on the country.
Last month environmental authorities said climate change was shrinking wetlands at the source of China's two greatest rivers -- the Yangtze and the Yellow -- which had reduced water flows.
Other studies found that massive glaciers in northwestern China's Xinjiang region and in the Himalayas had been shrinking rapidly.
This would have dire consequences for much of Asia as many of the region's rivers begin in those regions.
Labels: china, climate change, global warming, international politics
The latest plans for the Lunar Explorations Orbiter (LEO), a German lunar mission due for launch in 2012, will be presented on Wednesday 22nd August at the European Planetary Science Congress, Potsdam
Professor Ralf Jaumann, from the German aerospace centre DLR, said "The Lunar Explorations Orbiter will be a unique mission. It will consist of two spacecraft flying in formation and taking simultaneous measurements, which will give us the first three-dimensional view of the Moon's magnetic and gravitation field. It will also give us the first opportunity to study these fields on the far site of the Moon. In addition LEO will give us a very detailed picture of the lunar surface and also the structure of the lunar regolith, layers of crushed rocks that extend about 100 metres beneath the lunar surface, and the boundary with the bed-rock beneath."
Labels: Europe, germany, space exploration


T. rex may have struggled to chase down speeding vehicles as the movie Jurassic Park would have us believe but the world’s most fearsome carnivore was certainly no slouch, research out today suggests.
The University of Manchester study used a powerful supercomputer to calculate the running speeds of five meat-eating dinosaurs that varied in size from a 3kg Compsognathus to a six-tonne Tyrannosaurus.
The study – believed to be the most accurate ever produced – puts the T. rex at speeds of up to 18mph, fractionally quicker than a sportsman such as a professional footballer.
The bipedal Compsognathus, by comparison, could reach speeds of almost 40mph – that’s 5mph faster than the computer’s estimate for the fastest living animal on two legs, the ostrich.
The team – headed by biomechanics expert Bill Sellers and palaeontologist Phil Manning – say the accuracy of their results is due to the computer’s ability to use data relating directly to each dinosaur.
Woo! T Rex could book after all! What were the other 4 theropods?
A new class of catalysts created at the U.S. Department of Energy's Argonne National Laboratory may help scientists and engineers overcome some of the hurdles that have inhibited the production of hydrogen for use in fuel cells.
Argonne chemist Michael Krumpelt and his colleagues in Argonne's Chemical Engineering Division used "single-site" catalysts based on ceria or lanthanum chromite doped with either platinum or ruthenium to boost hydrogen production at lower temperatures during reforming. "We've made significant progress in bringing the rate of reaction to where applications require it to be," Krumpelt said.
Most hydrogen produced industrially is created through steam reforming. In this process, a nickel-based catalyst is used to react natural gas with steam to produce pure hydrogen and carbon dioxide.
These nickel catalysts typically consist of metal grains tens of thousands of atoms in diameter that speckle the surface of metal oxide substrates. Conversely, the new catalysts that Krumpelt developed consist of single atomic sites imbedded in an oxide matrix. The difference is akin to that between a yard strewn with several large snowballs and one covered by a dusting of flakes. Because some reforming processes tend to clog much of the larger catalysts with carbon or sulfur byproducts, smaller catalysts process the fuel much more efficiently and can produce more hydrogen at lower temperatures.
[...]
Krumpelt will present an invited keynote talk describing these results during the 234th national meeting of the American Chemical Society in Boston from August 18 to 23.
Labels: future tech, hydrogen economy
Labels: GPFS, HPC, suckage, supercomputers, work
The message to the West is clear: The days of dismissing Russia as a spent force are over. Bolstered by the cash from sales of oil and gas and President Putin's steely determination to re-establish the country on the world stage, the Russian military machine is back in business.
Various theories have been offered for the dramatic military expansion, not least the need to appeal to nationalists in the run-up to forthcoming parliamentary and presidential elections. The real reason, however, appears to be that Russia has taken offense at what it regards as the West's insulting indifference to its very existence.
Intelligence sources say Washington and London have been taken aback by just how seriously Russia has viewed the perceived slight and concede that in concentrating so heavily on Iraq and al Qaeda, they took their eye off the ball.
Labels: Europe, international politics, militaria, Russia, USA

The Japan Agency for Marine-Earth Science and Technology (JAMSTEC, led by President Yasuhiro Kato) and the Japan Aerospace Exploration Agency (JAXA, led by President Keiji Tachikawa) cooperatively analyzed oceanic and atmospheric observation data and sea ice data acquired by satellites, and found that the sea ice area in the Arctic Ocean has been decreasing at a much faster pace than expected compared to the previous worst record in the summer of 2005. After satellite observations started in 1978, the observed area shrunk to its lowest level on August 15, 2007. Ice melting normally continues until mid September, thus further shrinkage of the sea ice area is expected. The observed phenomenon significantly exceeded the forecasted model submitted in the Intergovernmental Panel on Climate Change (IPCC) fourth Assessment Report, and the big difference tells us that the model may not precisely reflect the actual situation in the Arctic Ocean.
Labels: arctic, climate change, global warming, science
A controversial theory proposes mimicking volcanoes to fight global warming. But throwing sulfur particles into the sky may do more harm than good, a new study says.I can't help but think that sulfur would cause other issues as well, but it is pretty high up in the atmosphere.
The temporary solution would pump particles of sulfur high into the atmosphere—simulating the effect of a massive volcano by blocking out some of the sun's rays. This intervention, advocates argue, would buy a little time to reduce greenhouse gas emissions.
But as well as cooling the planet, the sulfur particles would reduce rainfall and cause serious global drought, a new study says.
"It is a Band-Aid fix that does not work," said study co-author Kevin Trenberth of the National Center for Atmospheric Research (NCAR) in Boulder, Colorado.
It's just one of several drastic measures proposed to combat global warming, now that most scientists are in agreement that carbon dioxide, primarily from burning fossil fuels, is changing Earth's climate.
Labels: climate change, environment, global warming
Open Science Grid Council Meeting
National Energy Research Scientific Computing Center (NERSC)
415 Thomas L. Berkley Way
Oakland, California
August 17, 2007
http://opensciencegrid.org/
The Open Science Grid is a distributed computing infrastructure for large-scale scientific research. The OSG Consortium's unique alliance of universities, national laboratories, scientific collaborations and software developers brings petascale computing and storage resources into a uniform shared cyberinfrastructure. Members of the OSG Consortium contribute effort and resources to the OSG infrastructure and reap the benefits of a shared infrastructure that integrates computing and storage resources from more than 50 sites in the United States, Asia and South America. OSG also has partners, including campus, regional, national and international grids.The OSG is supported by the National Science Foundation and the U.S. Department of Energy's Office of Science.
The OSG Council is the governing body of the Consortium and provides the scientific coordination and oversight of OSG activities. The meeting on August 17, 2007 is to review the accomplishments of the first year of the OSG Project and signoff on the deliverables and schedule for the second year.
Labels: LBNL, supercomputers, work
The global-warming debate's great unmentionable is this: We lack the technology to get from here to there. Just because Arnold Schwarzenegger wants to cut emissions 80 percent below 1990 levels by 2050 doesn't mean it can happen. At best, we might curb the growth of emissions.
Consider a 2006 study from the International Energy Agency. Using present policies, it projected that emissions of carbon dioxide (a main greenhouse gas) would more than double by 2050; developing countries would account for almost 70 percent of the increase. The IEA then simulated an aggressive, global program to cut emissions that is based on the best available technologies: more solar, wind and biomass energy; more-efficient cars, appliances and buildings; more nuclear energy. Under this admitted fantasy, global emissions in 2050 would still slightly exceed 2003 levels.
Even the fantasy would be a stretch. In the United States, it would take massive regulations, higher energy taxes or both. Democracies don't easily adopt painful measures in the present to avert possible future problems. Examples abound. Since the 1973 Arab oil embargo, we've been on notice to limit dependence on insecure foreign oil. We've done little. In 1973, imports were 35 percent of U.S. oil use; in 2006, they were 60 percent. For decades we've known of the huge retirement costs of baby boomers. Little has been done.
Labels: climate change, global warming
The moon should be developed as a sanctuary for civilization in case of a cataclysmic cosmic impact, according to an international team of experts.
NASA already has blueprints to create a permanent lunar outpost by the 2020s. (Read: "Moon Base Announced by NASA" [December 4, 2006].)
But that plan should be expanded to include a way to preserve humanity's learning, culture, and technology if Earth is hit by a doomsday asteroid or comet, said Jim Burke, a scientist at NASA's Jet Propulsion Laboratory in California.
Burke, a project manager on some of the earliest American lunar landings, now heads an International Space University study on surviving a collision with a near-Earth object.
An impact of the size that wiped out the dinosaurs hasn't happened since long before the rise of humans, he pointed out.
Yet scientists' expanding knowledge of asteroids and craters left throughout the solar system has created a consensus that Earth remains vulnerable to a civilization-crushing collision.
This calls for the creation of a space age Noah's ark, Burke said.
Labels: moon, space exploration
This year China is celebrating the 80th anniversary of the Peoples' Liberation Army.
But its traditional strategic thinking is undergoing a huge shift, prompting fears in the United States that China might pose a threat to American diplomatic and military power with a naval arms race in the Pacific.
The capitulation of Sadam Hussein's army in the face of a hi-tech American onslaught in Desert Storm, with land, air and sea forces enabling a rapid US advance across large areas of land, gave a fresh impetus to military modernisation, according to Christian Lemiere, China expert at Jane's Country Risk.
"China had always relied upon the idea that if attacked it had large areas of land. It could fall back with these areas but if one power is able to take that and very quickly, it rapidly negates any advantage.
China has been looking to match US military technology and launched an anti-satellite missile as part of this process.
Joseph Lin, a military affairs analyst with the Jamestown Foundation in Washington said this development has unnerved the Pentagon.
"The United States is heavily dependent upon satellites for all matters of communications, especially the military, which would be crippled and completely ineffectual without any sort of satellite coverage either for imaging, navigation or for communications."
At the same time, China's naval build-up has alerted American military officials to the previously unthinkable possibility that they might face competition in the Pacific Ocean, where the US has enjoyed naval dominance since the World War Two.
What is the significance of "Peace Mission 2007" - the Shanghai Cooperation Organization (SCO) exercise now under way at the Chebarkulsk training ground in Chelyabinsk, Russia - and the summit that will follow in Bishkek?
Is the SCO, which consists of China, Russia, Kazakhstan, Kyrgyzstan, Tajikistan and Uzbekistan, on the verge of being transformed into a new Warsaw Pact, a Eurasian counterbalance to the US-led North Atlantic Treaty Organization (NATO)? Simon Tidsall of The Guardian newspaper quoted Pavel Felgenhauer, a Russian defense analyst, who observed: "As Moscow's relations with the West deteriorate, the Kremlin is doing its best to seek allies and is building up the SCO to counterbalance NATO. In propaganda terms, Peace Mission 2007 will be used to the full."
Meanwhile, the Russian newspaper Kommersant, in an article tellingly titled "Maneuvers to go around the United States", sees the exercises and the summit that will follow in Bishkek as part of a renewed Russian effort to push back against the US "on all fronts", from opposing plans to deploy missile-defense components in central-eastern Europe to "expelling" the US from Central Asia altogether. Kommersant also highlights the role played by former defense minister and current Deputy Prime Minister (and presidential contender) Sergei Ivanov in acting as the godfather of this mission, beginning with his visit to Beijing last year.
Statements coming from China, however, support the thesis advanced by political scientists Naazneen Barma, Ely Ratner and Steven Weber that emerging powers are seeking neither to integrate with nor balance against the US, but to create an alternative international order that "routes around" Washington. Chen Hu, executive chief editor of China's state-owned World Military Affairs magazine, made a point of stressing that "Peace Mission 2007 targets no country, nor does it mean a military alliance", and argued that the Shanghai grouping is not trying to create a counterbalancing bloc against Washington. He described it as a "new type" of regional security organization that has made obsolete the "traditional security outlook" of seeking a balance of power.
Yes, Chen had a not-so-subtle dig at Washington - noting that countries felt the need to work more closely together in the Shanghai framework since "different countries have different anti-terror combat criteria and a few of them push forward hegemony under the cloak of war on terror". But as Tidsall commented, "No one in the SCO, least of all China with next year's Beijing Olympics and its trade and development goals potentially in the firing line, seriously wanted confrontation with the West."
One of the theses of Weber, Ratner and Barma is that countries in the "World without the West" remain in play, and India's reaction to the exercises is a case in point. The Hindu newspaper reported: "While favoring cooperation with the SCO on trade and economic issues, official sources told The Hindu that India would like to steer clear of aligning with this six-nation grouping in military, strategic and political terms."
The International Labour Organisation has a new report out today, entitled "Visions for Asia’s Decent Work Decade: Sustainable Growth and Jobs to 2015". You can download the report in pdf here).
The report uses comparatively strong langauge, warning that - due to comparatively rapid `population ageing - the “demographic dividend” process is likely be limited in many parts of Asia, with the proportion of children aged 0 to 15 and youth aged 15 to 24 set to decline rapidly across the whole of the region. In fact they point out that the more developed parts of Asia - such as Singapore, South Korea and parts of China - are likely to hit the “demographic cliff” much earlier than the rest.
As they point out, more than a quarter of the population in several of the more “developed economies” are expected to be older than 65 by 2015, and in China, largely as a result of short sighted family planning policies, there has beem an “accelerated" demographic transition process. As a result, China is “ageing faster than any other nation in history”.
At least 20,000 police surveillance cameras are being installed along streets here in southern China and will soon be guided by sophisticated computer software from an American-financed company to recognize automatically the faces of police suspects and detect unusual activity.
Starting this month in a port neighborhood and then spreading across Shenzhen, a city of 12.4 million people, residency cards fitted with powerful computer chips programmed by the same company will be issued to most citizens.
Data on the chip will include not just the citizen’s name and address but also work history, educational background, religion, ethnicity, police record, medical insurance status and landlord’s phone number. Even personal reproductive history will be included, for enforcement of China’s controversial “one child” policy. Plans are being studied to add credit histories, subway travel payments and small purchases charged to the card.
Security experts describe China’s plans as the world’s largest effort to meld cutting-edge computer technology with police work to track the activities of a population and fight crime. But they say the technology can be used to violate civil rights.
The Chinese government has ordered all large cities to apply technology to police work and to issue high-tech residency cards to 150 million people who have moved to a city but not yet acquired permanent residency.
Both steps are officially aimed at fighting crime and developing better controls on an increasingly mobile population, including the nearly 10 million peasants who move to big cities each year. But they could also help the Communist Party retain power by maintaining tight controls on an increasingly prosperous population at a time when street protests are becoming more common.
“If they do not get the permanent card, they cannot live here, they cannot get government benefits, and that is a way for the government to control the population in the future,” said Michael Lin, the vice president for investor relations at China Public Security Technology, the company providing the technology.
Who would have thought that tainted pet food and toys would threaten to unravel the authoritarian export model of Chinese growth that the brutal Tiananmen Square crackdown in 1989 was partly meant to secure? China's then "paramount leader" Deng Xiaoping, who had been purged during the Cultural Revolution, could well imagine how political upheaval would derail China's stable path to prosperity. But it surely never entered his mind, nor that of his descendant comrades, that the fickle American consumer would one day become, as the students in the square wanted to be, the agent of revolutionary change in China.
In the name of sovereignty, China's leaders for a long time have gotten away with suppressing their own citizens while ignoring the get-gloriously-rich-quick corruption that has thrived in the absence of the rule of law. But, thanks to globalization, China's export reliance on the U.S. market has imported the political demands of the U.S. consumer into the equation. Americans won't hesitate to cut the import lifeline and shift away from Chinese products that might poison their children or kill their pets.
Unlike organized labor or human rights groups, consumers don't have to mobilize to effect change; they only have to stop spending. And their bargaining agents -- Wal-Mart, Target, Toys R Us -- have immensely more clout than the AFL-CIO and Amnesty International in fostering change in China.
Ironically, the United States' "most favored nation" trade treatment for China (and its later entry into the World Trade Organization), which labor and human rights groups so virulently opposed in the past, has become a Trojan horse. China's future is now so linked to the American consumer that Beijing will be forced to curb corruption and strengthen regulation through the rule of law or face the certain doom of its export-led growth.
Labels: arctic, china, demographics, international politics, militaria, Shanghai Cooperation Organization
A bill filed this month by U.S. Sen. Mel Martinez takes a step toward resolving Puerto Rico's ambiguous political status by mandating a referendum in which one of the choices would be a little-known form of independence called "free association."
Under the free-association form of government, Puerto Rico would be an independent nation that would relinquish some sovereign powers to the U.S. in exchange for benefits. The specifics of that arrangement would be bilaterally negotiated.
Voters also could choose the current commonwealth status, statehood or complete independence.
[...]
Critics of Martinez's bill point out that it doesn't compel Congress to act on the outcome of the referendum, which could render it little more than an opinion survey.
But through spokeswoman Jessica Garcia, Martinez, R-Fla., said Congress would act regardless.
"Congress will be morally and politically bound to act on a Puerto Rican status choice if Congress authorized the choice," Garcia said after consulting staff. "[Martinez] will fight to implement the choice of the Puerto Rican people."
The senator said he will seek a public hearing on the bill early next year.
The proposed legislation is being hailed as a victory by the island's autonomist-movement leaders, who have long said it is possible for Puerto Rico to be a sovereign nation without divorcing the U.S.
"We have been working for years to achieve recognition of the free-association formula as viable for all of the parties involved," said Nestor Duprey, spokesman for the Social Democratic Autonomist Movement. "It gives Puerto Rico the political powers it needs to solve its problems, and it helps the U.S. in the sense that Puerto Rico would stop being a financial burden for its treasury.
"At the same time, it preserves the political and economic relationship between the two countries."
Free association is the type of relationship that the Federated States of Micronesia, the Republic of the Marshall Islands and the Republic of Palau have with the United States. Each nation negotiated the terms of that association but yielded some of their sovereign powers to the U.S. in areas such as national defense and security. In exchange, the U.S. treats these nations uniquely by allowing access to domestic programs, including disaster response under the Federal Emergency Management Agency.
Labels: expansionism, Puerto Rico, USA
Not only is this glut of nitrogen disrupting ecosystems, polluting waters and harming human health, but its a silent partner, along with carbon dioxide, in changing the Earths climate.
Despite the countless initiatives under way to reduce CO2 levels to slow global warming, scientists warn that those efforts will prove moot unless nitrogen releases also are lowered.
One nitrogen compound is especially worrisome, as it lingers in the atmosphere for a century and is 300 times as potent a heat-trapping gas as carbon dioxide.
"We won't solve global warming without addressing nitrogen," said Elizabeth Holland, a senior scientist with the National Center for Atmospheric Research in Boulder, Colo.
"The changes to the nitrogen cycle are larger in magnitude and more profound than the changes to the carbon cycle," Holland continued. "But the nitrogen cycle is being neglected."
And that's a grave oversight, said Margaret Torn, the head of Climate Change and Carbon Management program at Lawrence Berkeley National Laboratory.
"Nitrogen should be on the radar," she said. "Unless we control that problem, we won't solve climate change."
Labels: climate change, global warming
A researcher at the University of Sheffield has discovered that the reason birds learn to fly so easily is because latent memories may have been left behind by their ancestors.
It is widely known that birds learn to fly through practice, gradually refining their innate ability into a finely tuned skill. However, according to Dr Jim Stone from the University of Sheffield’s Department of Psychology, these skills may be easy to refine because of a genetically specified latent memory for flying.
Dr Stone used simple models of brains called artificial neural networks and computer simulations to test his theory. He discovered that learning in previous generations indirectly induces the formation of a latent memory in the current generation and therefore decreases the amount of learning required. These effects are especially pronounced if there is a large biological 'fitness cost' to learning, where biological fitness is measured in terms of the number of offspring each individual has.
10–14 December 2007, Monday–Friday
Moscone West, 800 Howard Street
Moscone South, Howard Street (between 3rd and 4th streets)
San Francisco, CA, USA
Labels: conference, geology, paleoclimate, paleontology

Researchers may have uncovered the reason why Earth's biodiversity mysteriously plummets periodically. They have found that a rollercoaster-like wobble in the sun's orbit around the center of the Milky Way galaxy regularly moves Earth closer to a source of dangerous intergalactic cosmic rays.Over the last 500 million years or so, the number of species on Earth has tended to dip regularly about every 62 million years. The last time this happened, about 55 million years ago--or about 10 million years after the great K-T extinction event that wiped out the dinosaurs--biodiversity sank by about 10%; around 115 million years ago, it dropped by a similar amount. So far, evolutionary biologists have only been able to establish that the phenomenon seems cyclical, but they haven't isolated a cause.
Labels: evolution, mass extinction, science
HECIWG Executive Summary
The HECIWG is chartered by the The National Science and Technology Council's Subcommittee on Networking and Information Technology Research and Development (NITRD). The purpose of the IWG is to coordinate high-end computing (HEC) programs, budgets and policy recommendations. This includes identifying and integrating requirements, conducting joint program planning and devloping joint strategies for the HEC programs conducted by agencies that participate in the NITRD Program. A complete description of the HEC IWG can be found at NITRD's website.
HEC File Systems and I/O (HEC FSIO) Background
The need for immense and rapidly increasing scale in scientific computation drives the need for rapidly increasing scale in storage for scientific processing. Individual storage devices are rapidly getting denser while their bandwidth is not growing at the same pace. In the past several years, initial research into highly scalable file systems, high level Input/Output (I/O) libraries, and I/O middleware was done to provide some solutions to the problems that arise from massively parallel storage. To help plan for the research needs in the area of File Systems and I/O, the inter-government-agency document titled "HPC File Systems and Scalable I/O: Suggested Research and Development Topics for the Fiscal 2005-2009 Time Frame" was published which led the HECIWG to designate this area (FSIO) as a national focus area starting in FY06.
HEC FSIO Purpose
The HEC FSIO was created to advise the HECIWG in coordination of government R&D funding in HEC File Systems and I/O area so that the government's investment in this area of HEC is well spent, reduce gaps and overlaps. We are attempting to enable more and better R&D, and pass along the knowledge to the next generation.
Labels: file systems, HPC, supercomputers
About two and one-half billion years ago, life on Earth was still in its infancy. Complex organisms such as plants and animals had not yet appeared, but the planet was teeming with microscopic bacteria which thrived in the temperate and nutrient-rich environment. Greenhouse methane lingered in the atmosphere and trapped the sun's warmth, creating a climate very accommodating to the stew of microbes life that made their home on primitive Earth.
But a billion years of bacterial evolutionary progress was soon stunted by a catastrophic global event. Geologists find no signs of a great meteor impact nor a volcanic eruption, but they have uncovered the unmistakable geologic scars of rapid worldwide climate change. Average temperatures, which were previously comparable to our present climate, plummeted to minus 50 degrees Celsius and brought the planet into its first major ice age. This environmental shift triggered a massive die-off which threatened to extinguish all life on Earth, and paleoclimatologists have good reason to believe that this world-changing event was unwittingly caused by some of the planet's own humble residents: bacteria.
Labels: deep time, mass extinction
A new study on Latino immigrants finds that, in contrast to past generations of European immigrants, a significant share of second-and-third-generation Latino-Americans identify with a Latino racial category. The paper – “Are Latinos Becoming White" Determinants of Latinos’ Racial Self-Identification in the U.S.” – was presented Aug. 12 at the 102nd annual meeting of the American Sociological Association in New York, and was co-written by Joseph Michael, a UC doctoral student in the Department of Sociology and a researcher at the National Opinion Research Center at the University of Chicago, and Jeffrey Timberlake, UC assistant professor of sociology.
Michael and Timberlake are examining how the immigration of Latinos to the United States compares to the earlier immigration waves of white ethnic groups such as the Italian, Irish and European Jewish immigrants who were once considered non-white. The researchers explain that in most surveys and the U.S. Census, Latino respondents are first asked to identify themselves as Latino or Hispanic, and then they are asked to select a racial identity. “Thus, American social scientists have defined Latinos not as a racial group, but rather as an ethnicity (or set of ethnicities) based largely on the relatively common cultural heritage of Latin America and the Spanish Caribbean,” write the authors.
Labels: demographics, immigration
And then the Ouchie...
Labels: arctic, climate change, global warming
Danish scientists head for the Arctic ice pack on Sunday seeking evidence to position Denmark in a race to claim the potentially vast oil and other resources of the North Pole region.
Russia sent two small submarines to plant a tiny national flag under the North Pole last week. Canada, the United States and Norway also have competing claims in the vast Arctic region, where a U.S. study suggests as much as 25 percent of the world's undiscovered oil and gas could be hidden.
The monthlong Danish expedition will seek evidence that the Lomonosov Ridge, a 1,240-mile underwater mountain range, is attached to the Danish territory of Greenland, making it a geological extension of the Arctic island.
That might allow the Nordic nation to stake a claim under a U.N. treaty that could stretch all the way the North Pole, although Canada and Russia also claim the ridge.
A new study reveals correlations between plentiful sunspots and periods of heavy rain in East Africa. Intense rainfall in the region often leads to flooding and disease outbreaks.Fascinating!
The analysis by a team of U.S. and British researchers shows that unusually heavy rainfalls in East Africa over the past century preceded peak sunspot activity by about one year. Because periods of peak sunspot activity, known as solar maxima, are predictable, so too are the associated heavy rains that precede them, the researchers propose.
"With the help of these findings, we can now say when especially rainy seasons are likely to occur, several years in advance," says paleoclimatologist and study leader Curt Stager of Paul Smith's College in Paul Smiths, New York. Forewarned by such predictions, public health officials could ramp up prevention measures against insect-borne diseases long before epidemics begin, he adds.
The sunspot-rainfall analysis is scheduled to appear on 7 August in the Journal of Geophysical Research - Atmospheres, a publication of the American Geophysical Union.
Increasing sunspot numbers indicate a rise in the sun's energy output. Sunspot abundance peaks on an 11-year cycle. The next solar maximum is expected in 2011-2012. If the newfound pattern holds, rainfall would also peak the year before.

(credit: Latino Pundit)Labels: demographics, USA
They are known ominously as the Big Five—the five greatest mass extinctions over the past 500 million years, each of which is thought to have annihilated anywhere from 50 to 95 percent of all species on the planet.
Many unsolved mysteries remain regarding these disasters, perhaps the greatest of which is what caused each of them. But research is uncovering how these extinction events dictated the fate of life on this planet—for instance, determining which animals first crawled onto land and which ruled the oceans.
The main suspects behind these catastrophes seem to come either from above, in the form of deadly asteroids or comets, or from below, in the form of extraordinarily massive volcanism. Occasionally, however, unexpected culprits arise—for instance, otherwise innocuous forests.
Labels: links, mass extinction, paleontology
The Shanghai Cooperation Organization (SCO) launches military exercises in Russia’s Chelyabinsk Region and China’s Xinjiang Uyghur Autonomous Region on Thursday. The maneuvers are designed to counter an uprising reminiscent of bloodshed in Uzbekistan in 2005 and aimed to show that Eurasia’s east has a powerful military and political alliance whose members are ready to close ranks in any situation. SCO leaders including Russian President Vladimir Putin are to visit a training range in Chebarkul for the final stage of the drills.
Labels: china, international politics, Russia, Shanghai Cooperation Organization
Two Sukhoi fighter-bombers with Russian Air Force markings, flying together from the direction of North Ossetia, intruded by some 80 kilometers into Georgia’s air space on August 6. At 18:20 local time, one of these planes dived from 3,000 meters altitude and dropped a missile near the town of Gori, some 50-60 kilometers from Tbilisi, on a village within the so-called “Georgian-South Ossetian conflict zone.”
The powerful missile with 78 kilograms of TNT landed in a field, failed to explode, and was defused by Georgian military sappers. Georgian Defense Ministry radars and those of Georgia’s civil aviation authority recorded the flight itinerary from and back to Russia’s North Ossetia. The village, Tsitelubani, is within sight of Russian and South Ossetian “peacekeeping” troops’ posts.
This incident follows in the footsteps of the Russian air raid on the Georgian-controlled Kodori Gorge in upper Abkhazia on March 11 (see EDM, March 19, 20). The United Nations led the investigation into that incident, dragged its feet as long as it could, and published the results in July, whitewashing Russia, despite the clear evidence of Russian culpability. The fresh whitewash almost certainly emboldened the Russian military into recidivism, further probing and testing Georgian and Western reactions.
Labels: Europe, Georgia, international politics, Russia
What if you had a material that could form itself into a hammer or a wrench on demand? That's the goal of DARPA's Programmable Matter project, described here by program manager Mitchell Zakin.
The idea is what Zakin calls "infochemistry", building structures out of smart, versatile mesoparticles that can nond themselves together on demand, perehaps using techniques like tribocharging - static cling, in ultrasimple terms - or jamming, the technical term for the process that turns sand and water into concrete.
The result, he says, could be materials that assemble themselves and include different mesoparticles to carry out different functions - sensing and computing.
All manufacturing, says Zakin, could be reduced to producing the mesoparticles and assembling them. The results could include airplane wings that instantly change shape, or apparel that automatically adjusts body temperature.
The goal of the claytronics project is to understand and develop the hardware and software neccesary to create a material which can be programmed to form dynamic three dimensional shapes which can interact in the physical world and visually take on an arbitrary appearance. Claytronics refers to an ensemble of individual components, called catoms—for claytronic atoms—that can move in three dimensions (in relation to other catoms), adhere to other catoms to maintain a 3D shape, and compute state information (with possible assistance from other catoms in the ensemble). Each catom contains a CPU, an energy store, a network device, a video output device, one or more sensors, a means of locomotion, and a mechanism for adhering to other catoms.
The power and flexibility that will arise from being able to "program" the world around us should influence every aspect of the human experience. In our project we focus in on one particular aspect of the human experience, how we communicate and interact with each other. Claytronics is a technology which can serve as the means of implementing a new communication medium, which we call pario. The idea behind pario is to reproduce moving, physical 3D objects. Similar to audio and video, we are neither transporting the original phenomena nor recreating an exact replica: instead, the idea is to create a physical artifact that can do a good enough job of reproducing the shape, appearance, motion, etc., of the original object that our senses will accept it as being close enough.
Labels: future tech, Sfnal
A research team at Tehran's Amirkabir University of Technology has designed and manufactured the country's fastest supercomputer.
[...]
Only a few countries posses the technology to make this type of super-fast computer which can process more than 860 billion operations per second.
Labels: HPC, Iran, supercomputers
Labels: book review, books
Labels: blog, deep time, paleontology, work
In many a time-travel story, little attention is paid to the local ecology of the destination of the intrepid travelers. If you’re headed back to visit Leonardo da Vinci, this probably isn’t going to be a problem, but if you’re headed back much further, like the Carboniferous or Permian, you might run into some trouble. Indeed, nothing could kill such a “time safari” quicker (like the one in L. Sprauge de Camp’s “Crocamander Quest,” collected in The Ultimate Dinosaur) than stepping out of the time portal/capsule and not being able to breathe. Fanciful notions of time travel aside, we can tell something about the ancient atmosphere without having to actually step foot there, and it has some very interesting implications for evolution and ecology.
Labels: carboniferous, evolution, paleoecology

Robots have been roaming the streets of Iraq, since shortly after the war began. Now, for the first time -- the first time in any warzone -- the machines are carrying guns.
After years of development, three "special weapons observation remote reconnaissance direct action system" (SWORDS) robots have deployed to Iraq, armed with M249 machine guns. The 'bots "haven't fired their weapons yet," Michael Zecca, the SWORDS program manager, tells DANGER ROOM. "But that'll be happening soon."
Russia's main producer of spacecraft is to be put into emergency administration to fight off bankruptcy, Russia's Interfax news agency quoted the company's chief as saying on Tuesday.
The Energia Rocket and Space Corporation is the main Russian contractor for the international space station and also makes satellites and rockets. It was unclear if Russia's space program would be affected.
"We intend to introduce emergency administration for the corporation, because the financial idealism that existed here has led not to flights to the moon, but to bankruptcy," Interfax quoted company chairman Vitaly Lopota as saying.
Labels: Russia, space exploration
Science advisors to the Marine Corps brigade deployed to western Iraq are eyeing a concept for a new flying drone armed with lethal and non-lethal weapons to help disrupt insurgent cells with sudden airborne attacks.Such a drone would “take the fight to anti-Iraqi forces in areas where they currently perceive sanctuary,” according to a briefing provided by one advisor, who requested anonymity because he is not authorized to speak to the press.
The concept is to take an existing “Tier II” medium-size drone in the vein of the 10-foot-wingspan Boeing/InSitu Scan Eagle, and fit it with two 40-millimeter grenade launchers, two green-laser dazzlers and a focused sound device similar to the Long-Range Acoustic Device manufactured by American Technology Corporation. This suite would give Marine operators “escalation of force options,” according to the briefing.
In other words, the drone would be able to first warn off suspected insurgents by beaming a verbal message in Arabic. If the suspects don’t disperse, the drone can dial up the intensity of its sound broadcast, causing pain and disorientation. If that doesn’t work, there are the laser dazzlers, which can cause temporary blindness from up to a mile away. If, after all of this, the suspects are still behaving threateningly, the drone can fire its grenade launchers.
A high-performance, armed Unmanned Aerial Vehicle tops the wish lists of Marine Corps officers deployed to western Iraq. But urgent requests for the drones have become mired in a long-delayed program to procure new “Tier II” UAVs as part of the Marine Corps’ overarching future airborne surveillance architecture.

Labels: china, high energy lasers, militaria, missile defense, navy, uav, USA
Russia's state-controlled gas monopoly said Wednesday that it will reduce natural gas supplies to Belarus by 45 percent as of Friday after Minsk failed to pay in full for previous gas shipments.