People Deforested the Central African Tropical Rain Forest 2,600 Years ago

The forested expanses of Central Africa host the second largest block of tropical rainforest on Earth (after Amazonia), stretching over around 2 × 106 km2. They are the great green heart of Africa, and changes in vegetation cover are likely to have important but poorly understood influences on the climate of much of the continent (1). A remarkable feature is that this blanket of forest appears quite tenuous—under the arid climates of the ice ages, the forest appears to have retreated into isolated pockets surrounded by savanna grasslands. Even in the climatically stable Holocene, there appears to have been periods of substantial forest retreat. In particular, there is evidence for a period of major forest loss between 3,000 and 2,000 y ago [termed the Late Holocene rainforest crisis (LHRC) (2)]. Attributing the cause of this decline is complicated by the fact that this period coincided with major expansion of Neolithic and early Iron Age farmers southward from the Nigeria/Cameroon border regions into western Central Africa. Did the farmers take advantage of a forest retreat driven by climate drying, or were they the primary cause of the forest loss? In recent years, there has been a vigorous debate on the cause of the LHRC. Now, Garcin et al. (3) provide new data and an unexpected new insight, presenting strong evidence that there was no strong drying event, and therefore suggesting that it was direct deforestation that caused this retreat of the Central African rainforests.

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Better start rethinking the anthropocene, folks.

Modern Europeans are Descended From Anatolian Farmers, not Paleolithic Europeans

For most of the last 45,000 years Europe was inhabited solely by hunter-gatherers. About 8,500 years ago a new form of subsistence - farming - started to spread across the continent from modern-day Turkey, reaching central Europe by 7,500 years ago and Britain by 6,100 years ago. This new subsistence strategy led to profound changes in society, including greater population density, new diseases, and poorer health. Such was the impact of farming on how we live that scientists have debated for more than 100 years how it was spread across Europe. Many believed that farming was spread as an idea to European hunter-gatherers but without a major migration of farmers themselves.

This week, an international research team led by paleogeneticists of Johannes Gutenberg University Mainz (JGU) publishes a study in the journal Proceedings of the National Academy of Sciences of the United States of America showing that early farmers from across Europe have an almost unbroken trail of ancestry leading back to the Aegean. The scientists analyzed the DNA of early farmer skeletons from Greece and Turkey. According to the study, the Neolithic settlers from northern Greece and the Marmara Sea region of western Turkey reached central Europe via a Balkan route and the Iberian Peninsula via a Mediterranean route. These colonists brought sedentary life, agriculture, and domestic animals and plants to Europe. During their expansion they will have met hunter-gatherers who lived in Europe since the Ice Age, but the two groups mixed initially only to a very limited extent. "They exchanged cultural heritage and knowledge, but rarely spouses," commented anthropologist Joachim Burger, who lead the research. "Only after centuries did the number of partnerships increase."

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Will Digital Farming Cause a Shift in the Agricultural Chemical Sector?

Global pesticides, seeds and fertilizer companies may be forced to re-engineer their business models as farmers adopt specialist technology that helps maximize harvests while reducing the use of crop chemicals.

New businesses are springing up that promise to tell farmers how and when to till, sow, spray, fertilize or pick crops based on algorithms using data from their own fields.

Their emphasis on reducing the use of chemicals and minerals known as farming inputs is a further challenge for an industry already struggling with weak agricultural markets worldwide.

"If our only goal is to sell as much inputs as possible by the liters of chemicals, I think we would have a real problem going forward," said Liam Condon, head of Crop Science at Bayer, the world's second-largest pesticides supplier.

Bayer bought proPlant, a developer of software for plant health diagnostics, earlier this year. Rivals are also investing in digital farming with the aim of generating service revenues that could offset any future drop in chemicals volumes.

"If you only spray half of the field that's much less inputs," Condon added. "The knowledge to get to the fact that you only spray that part of the field -- that, you can sell."

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2/3s of American Urban Farmers Have Motives Other Than Profit

Two thirds of urban farmers have a social mission that goes beyond food production and profits, finds new research led by NYU Steinhardt School of Culture, Education, and Human Development.

The study, published in the British Food Journal, shows that three of the four top reasons farmers grow in urban areas - food security, education, community building, and producing food for the market - have social motivations.

As urban populations grow in the United States, farming in cities is becoming more common. While food entrepreneurs seek to make money through urban farming, many urban farms are concerned with factors beyond food production, and have incorporated social goals into their missions. These missions align with a larger social movement in food - the "good food movement" - that focuses on where food comes from, who grows it, and how it's grown.

"Given the limited ability of urban farms in terms of food production, the social mission of urban farms arises as a possible explanation for the recent growth," said study author Carolyn Dimitri, associate professor of food studies at NYU Steinhardt.

In their study, Dimitri and her colleagues identified and analyzed the social missions of urban farms in the United States, and explored differences and similarities among farms with varying missions.

They analyzed data collected from a national survey of 370 urban farmers. Thirty-five questions, covering the 2012 farm year, addressed food production and marketing practices, risks and challenges, information and technical assistance needs, farm size and location, age of primary farmer, and farm characteristics.

The researchers found that food production is an essential part of the mission for all urban farms, but approximately two thirds of farmers surveyed also expressed a social mission. These social missions are primarily related to food security, education, and community building.

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Celts Were NOT (!) the Ancient Irish?

A team of geneticists from Trinity College Dublin and archaeologists from Queen's University Belfast has sequenced the first genomes from ancient Irish humans, and the information buried within is already answering pivotal questions about the origins of Ireland's people and their culture.

The team sequenced the genome of an early farmer woman, who lived near Belfast some 5,200 years ago, and those of three men from a later period, around 4,000 years ago in the Bronze Age, after the introduction of metalworking. Their landmark results are published today in international journal Proceedings of the National Academy of Sciences, USA.

Ireland has intriguing genetics. It lies at the edge of many European genetic gradients with world maxima for the variants that code for lactose tolerance, the western European Y chromosome type, and several important genetic diseases including one of excessive iron retention, called haemochromatosis.

However, the origins of this heritage are unknown. The only way to discover our genetic past is to sequence genomes directly from ancient people, by embarking on a type of genetic time travel.

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A Look at Vertical Farming in Latin America

Infrared thermometer in hand, Nelson Pérez checks the water temperature in the trays where dozens of small lettuce plants are growing in a nutrient-rich liquid in this vertical farm in Panama.

The water, which contains calcium, phosphorus, magnesium and vitamins, must be kept at a steady 21 degrees Celsius, to obtain the best growth.

Pérez is the watchful carekeeper of the lettuce growing in trays in the controlled environment created by the Urban Farms company in the town of Río Hato, population 15,700, in the province of Coclé, some 125 km north of Panama City.

The vertical farm, the only one of its kind in Latin America, is an example of controlled-environment agriculture, a technology-based approach toward food production which often uses hydroponic methods. This kind of farming helps combat the effects of climate change on agriculture.

“Climate change has affected agricultural production,” said David Proenza, founder of Urban Farms. “So we saw a need to see what changes we could bring about, using technology.”

In 2010, Proenza heard about experiments with vertical farming in Asia and travelled to Japan, where he contacted researchers and members of the business community.

He brought the technique back to Panama, and he and his new partners decided to send an agronomist to be trained in Japan.

Until then, he was a conventional producer of watermelon and other crops.

“The farmer controls everything, from the seeds to the harvest,” he explained to IPS. “The idea is to produce and consume locally.”

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Hat tip to Randy.

Europeans are Really all Turkish, well, Anatolian

The introduction of agriculture into Europe about 8,500 years ago changed the way people lived right down to their DNA.

Until recently, scientists could try to understand the way humans adapted genetically to changes that occurred thousands of years ago only by looking at DNA variation in today's populations. But our modern genomes contain mere echoes of the past that can't be connected to specific events.

Now, an international team reports in Nature that researchers can see how natural selection happened by analyzing ancient human DNA.

"It allows us to put a time and date on selection and to directly associate selection with specific environmental changes, in this case the development of agriculture and the expansion of the first farmers into Europe," said Iain Mathieson, a research fellow in genetics at Harvard Medical School and first author of the study.

By taking advantage of better DNA extraction techniques and amassing what is to date the largest collection of genome-wide datasets from ancient human remains, the team was able to identify specific genes that changed during and after the transition from hunting and gathering to farming.

Many of the variants occurred on or near genes that have been associated with height, the ability to digest lactose in adulthood, fatty acid metabolism, vitamin D levels, light skin pigmentation and blue eye color. Two variants appear on genes that have been linked to higher risk of celiac disease but that may have been important in adapting to an early agricultural diet.

Other variants were located on immune-associated genes, which made sense because "the Neolithic period involved an increase in population density, with people living close to one another and to domesticated animals," said Wolfgang Haak, one of three senior authors of the study, a research fellow at the University of Adelaide and group leader in molecular anthropology at the Max Planck Institute for the Science of Human History.

"Although that finding did not come fully as a surprise," he added, "it was great to see the selection happening in 'real time.'"

The work also supports the idea that Europe's first farmers came from ancient Anatolia, in what is now Turkey, and fills in more details about how ancient groups mixed and migrated.

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Seoul is Planning Vertical Farms

Seoul City Hall is planning to introduce “vertical farms.”

The farms would be three stories high, with vegetables and crops grown on the second and third floors, while the first floor would serve as a classroom for teaching agriculture, city officials said Tuesday.

The farms will be computer controlled to provide the right light, temperature and humidity, and check carbon dioxide levels.

The western district of Yangcheon will be home to the first farms.

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Eurasian Farmers "Invaded" Africa at Least 4,500 Years ago, 4 to 7% of African Genome is Eurasian

Geneticists have sequenced the first prehistoric genome from Africa: that of Mota, a hunter-gatherer man who lived 4500 years ago in the highlands of Ethiopia. Named for the cave that held the remains, the Mota genome gives scientists their first glimpse into what an African genome looked like prior to many recent migrations in Africa. This ancient Ethiopian highlander is most closely related to the Ari, an ethnic group that speaks Omotic languages in the Ethiopian highlands today. And when researchers compared Mota's genome to that of other Africans, Europeans, and Asians, they got a surprise: Africa is usually seen as a source of outward migrations, but the genomes suggest a major migration into Africa by farmers from the Middle East, possibly about 3500 years ago. These farmers' DNA reached deep into the continent, spreading even to groups considered isolated such as the Khoisan of South Africa and the pygmies of the Congo.

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The 3 Story Floating Farm Proposal

With the world’s population expected to hit 9.1 billion by 2050, coupled with the growing effects of climate change on our ability to grow crops, a company out of Barcelona has proposed a solution to feeding the future world. Forward Thinking Architecture's triple-decker Smart Floating Farms would feature 2.2 million square feet (2.04 sq km) of fish farm, hydroponic garden, and rooftop solar panels to power a floating barge, which could be anchored to the beds of oceans, lakes or rivers. The company estimates that each of its floating farms could produce about 8 tons (7.3 tonnes) of vegetables and 1.7 tons (1.5 tonnes) of fish per year.

The floating farms are intended to provide a solution that can keep up with food production levels that will have to increase by 70 percent globally, and 100 percent in developing nations, to feed more than 9 billion mouths. With so many people, arable land would be stretched to its growing capacity (we’re currently using 80 percent), while fresh water supplies would be severely stressed. Oceans are also being overfished at present.

The company’s idea to move farms onto the surface of water would address all those issues. Each level of the triple-decker farm would have its own function, and would operate as part of a sustainable loop that feeds into the other decks.

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No Cloning Down on the Farm in the European Union

The European Parliament today voted to ban the cloning of all farm animals as well as the sale of cloned livestock, their offspring, and products derived from them. The measure, which passed by a large margin, goes beyond a directive proposed by the European Commission in 2013, which would have implemented a provisional ban on the cloning of just five species: cattle, sheep, pigs, goats, and horses.

The supporters of the ban cited animal welfare concerns, claiming that only a small percentage of cloned offspring survive to term, and many die shortly after birth.

The ban does not cover cloning for research purposes, nor does it prevent efforts to clone endangered species.

Companies in the United States and in China are cloning livestock for breeding and for research purposes, and the U.S. Food and Drug Administration found no significant differences between healthy clones and healthy animals from conventional breeding. It considers meat and other products form clones to be as safe as that from other farm animals.

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Basques are Closely Related to FIrst European Farmers

An international team led by researchers at Uppsala University reports a surprising discovery from the genomes of eight Iberian Stone-Age farmer remains. The analyses revealed that early Iberian farmers are the closest ancestors to modern-day Basques, in contrast previous hypotheses that linked Basques to earlier pre-farming groups.

The team could also demonstrate that farming was brought to Iberia by the same/similar groups that migrated to northern and central Europe and that the incoming farmers admixed with local, Iberian hunter-gather groups, a process that continued for at least 2 millennia.

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Italy Declares not to be Outdone by British 'Sub' Urban Farming, Have Their own Take on 'Sub' Urban Farming Underwater

The stand for the region of Liguria at the Milan 2015 Expo features a project as bizarre-sounding as it is intriguing: an attempt to grow crops underwater, inside air-filled biospheres. It's part of an effort that could prove a low-cost, low-energy solution to grow food in parts of the world where this was not previously possible.

Though of fascinating beauty, the land in the region of Liguria in Northern Italy is known to be especially poor for farming. Between the crowded population, rocky terrain, steep hills that often give way to landslides, and the periodic floods, the locals have had to resort to energy-inefficient terrace farming.

This is not an isolated problem: lack of fertile land and adverse climate conditions around the world means we've seen several projects involving growing crops creatively, including underground, inside a skyscraper, in a tiny greenhouse and even in the cloud, to try and deal with the issue.

For their project, however, scuba diving company owner Sergio Gamberini and his son Luca have picked an even more unusual spot: under the sea, inside biospheres 6 to 9 meters (20 to 30 ft) below the surface, just off the Ligurian tourist beaches of the town of Noli, near Savona.

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A Whole new Take on 'Sub' Urban Farming in London's WW2 Tunnels

The "world’s first underground urban farm" is set to start selling herbs and salads grown 33 m (108 ft) below the streets of London. Growing Underground is based in disused World War II tunnels. At less than two miles from the city-center, it promises farm-to-fork produce in less than four hours.

Growing Underground is the brainchild of West Country entrepreneurs Richard Ballard and Steven Dring and has been developed in partnership with Michelin-starred chef Michel Roux Jr. It was conceived as a means of producing local and environmentally-friendly high-quality produce, with the disused tunnels providing the ideal location.

The tunnels are located below London's Northern Line underground rail link in the Clapham area of the city and were previously used as a bomb shelter for residents. The site currently being used was able to accommodate 8,000 people when needed. Now it provides a steady and controllable environment for Ballard and Dring to grow their crops.

The location allows for all year round urban farming, as it's unaffected by weather and seasonal changes. It is a pesticide-free environment and the hydroponics system employed is said to use 70 percent less water than traditional open-field farming. Likewise, the lighting and irrigation systems mean the crops can be grown with very little energy. What energy is used is sourced only from green suppliers.

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Precision Agriculture: Embracing the Robopocalypse on the Farm

Today’s agriculture has transformed into a high-tech enterprise that most 20th-century farmers might barely recognize.

After all, it was only around 100 years ago that farming in the US transitioned from animal power to combustion engines. Over the past 20 years the global positioning system (GPS), electronic sensors and other new tools have moved farming even further into a technological wonderland.

Beyond the now de rigeur air conditioning and stereo system, a modern large tractor’s enclosed cabin includes computer displays indicating machine performance, field position and operating characteristics of attached machinery like seed planters.

And as amazing as today’s technologies are, they’re just the beginning. Self-driving machinery and flying robots able to automatically survey and treat crops will become commonplace on farms that practice what’s come to be called precision agriculture.

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Farming in Northern Europe: Resistance was Futile, but Archaeologically Documented

Ornaments Reveal Resistance of North European Cultures to the Spread of Farming

Authors:

Riguad et al

Abstract:

The transition to farming is the process by which human groups switched from hunting and gathering wild resources to food production. Understanding how and to what extent the spreading of farming communities from the Near East had an impact on indigenous foraging populations in Europe has been the subject of lively debates for decades. Ethnographic and archaeological studies have shown that population replacement and admixture, trade, and long distance diffusion of cultural traits lead to detectable changes in symbolic codes expressed by associations of ornaments on the human body. Here we use personal ornaments to document changes in cultural geography during the Mesolithic-Neolithic transition. We submitted a binary matrix of 224 bead-types found at 212 European Mesolithic and 222 Early Neolithic stratigraphic units to a series of spatial and multivariate analyses. Our results reveal consistent diachronic and geographical trends in the use of personal ornaments during the Neolithisation. Adoption of novel bead-types combined with selective appropriation of old attires by incoming farmers is identified in Southern and Central Europe while cultural resistance leading to the nearly exclusive persistence of indigenous personal ornaments characterizes Northern Europe. We argue that this pattern reflects two distinct cultural trajectories with different potential for gene flow.

Tracing Europe's First Farmers

Tracing the genetic origin of Europe's first farmers reveals insights into their social organization

Authors:

Szécsényi-Nagy et al

Abstract:

Farming was established in Central Europe by the Linearbandkeramik culture (LBK), a well-investigated archaeological horizon, which emerged in the Carpathian Basin, in today's Hungary. However, the genetic background of the LBK genesis is yet unclear. Here we present 9 Y chromosomal and 84 mitochondrial DNA profiles from Mesolithic, Neolithic Starčevo and LBK sites (seventh/sixth millennia BC) from the Carpathian Basin and southeastern Europe. We detect genetic continuity of both maternal and paternal elements during the initial spread of agriculture, and confirm the substantial genetic impact of early southeastern European and Carpathian Basin farming cultures on Central European populations of the sixth–fourth millennia BC. Comprehensive Y chromosomal and mitochondrial DNA population genetic analyses demonstrate a clear affinity of the early farmers to the modern Near East and Caucasus, tracing the expansion from that region through southeastern Europe and the Carpathian Basin into Central Europe. However, our results also reveal contrasting patterns for male and female genetic diversity in the European Neolithic, suggesting a system of patrilineal descent and patrilocal residential rules among the early farmers.

Robopocalypse Comes for the Sheep Dog in Carrow, Ireland

some info.

Introducing the Shipping Container Gardens From Freight Farms and Cropbox

Ensuring that the food we eat is locally and sustainably grown is not always easy, especially in cities where crop-growing space is at a premium. Firms like Freight Farms and Cropbox, however, have a solution to this problem. They offer shipping containers that are kitted out as self-contained farms.

We've already seen the humble shipping container reappropriated for all sorts of different uses, including as part of an inner city farm concept. Freight Farms and Cropbox actually deliver that concept, albeit more practically and one container at a time.

The containers offered by both companies feature hydroponic technology, which employs a mineral-based solution in which to grow crops rather than soil. This means that the quality of the produce is not affected by prevailing weather conditions and that the conditions can be precisely tailored.

According to Cropbox, such systems use up to 90 percent less water than traditional growing methods. Both firms offer LED lighting in their containers too, which also compares favorably to other lighting methods. Overall, Freight Farms says each one of its containers takes 30,000 kWh of electricity annually to run.

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Big Finance Coming to Big Agriculture

IN THE next 40 years, humans will need to produce more food than they did in the previous 10,000 put together. But with sprawling cities gobbling up arable land, agricultural productivity gains decreasing, and demand for biofuels increasing, supply is not keeping up with demand. Clever farmers, scientists and entrepreneurs are bursting with ideas. But they need money to make this jump.

Financiers more often found buying and selling companies have cottoned on to the opportunity. Farm gates have traditionally been closed to capital markets: nine in ten farms are held by families. But demography is forcing a shift: the average age of farmers in Europe, America and New Zealand is now in the late fifties. They often have no successor, because offspring do not want to farm or cannot afford to buy out family members. In addition, adopting new technologies and farming at ever-greater scale require the sort of capital few farmers have, even after years of bumper crop prices.

Institutional investors such as pension funds see farmland as fertile ground to plough, either doing their own deals or farming them out to specialist funds. Some act as landlords by buying land and leasing it out. Others buy plots of low-value land, such as pastures, and upgrade them to higher-yielding orchards. Investors who are keen on even bigger risks and rewards flock to places such as Brazil, Ukraine and Zambia, where farming techniques are often still underdeveloped and potential productivity gains immense.

Farmland has been a great investment over the past 20 years, certainly in America, where annual returns of 12% caused some to dub it “gold with a coupon”. In America and Britain, where tax incentives have distorted the market, it outperformed most major asset classes over the past decade, and with low volatility to boot (see chart). Those going against the grain warn of a land-price bubble. Believers argue that increasing demand and shrinking supply—as well as urbanisation, poor soil management and pressure on water systems that are threats to farmland—mean the investment case is on solid ground.

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