Minggu, 22 November 2009

Eight Meaty Facts About Animal Food


From our friend Ananda's excellent blog "Servant of The Servants"

Eight Meaty Facts About Animal Food

WHERE'S THE GRAIN? The 7 billion livestock animals in the United States consume five times as much grain as is consumed directly by the entire American population.

HERBIVORES ON THE HOOF. Each year an estimated 41 million tons of plant protein is fed to U.S. livestock to produce an estimated 7 million tons of animal protein for human consumption. About 26 million tons of the livestock feed comes from grains and 15 million tons from forage crops. For every kilogram of high-quality animal protein produced, livestock are fed nearly 6 kg of plant protein.

FOSSIL FUEL TO FOOD FUEL. On average, animal protein production in the U.S. requires 28 kilocalories (kcal) for every kcal of protein produced for human consumption. Beef and lamb are the most costly, in terms of fossil fuel energy input to protein output at 54:1 and 50:1, respectively. Turkey and chicken meat production are the most efficient (13:1 and 4:1, respectively). Grain production, on average, requires 3.3 kcal of fossil fuel for every kcal of protein produced. The U.S. now imports about 54 percent of its oil; by the year 2015, that import figure is expected to rise to 100 percent.

THIRSTY PRODUCTION SYSTEMS. U.S. agriculture accounts for 87 percent of all the fresh water consumed each year. Livestock directly use only 1.3 percent of that water. But when the water required for forage and grain production is included, livestock's water usage rises dramatically. Every kilogram of beef produced takes 100,000 liters of water. Some 900 liters of water go into producing a kilogram of wheat. Potatoes are even less "thirsty," at 500 liters per kilogram.

HOME ON THE RANGE. More than 302 million hectares of land are devoted to producing feed for the U.S. livestock population -- about 272 million hectares in pasture and about 30 million hectares for cultivated feed grains.

DISAPPEARING SOIL. About 90 percent of U.S. cropland is losing soil -- to wind and water erosion -- at 13 times above the sustainable rate. Soil loss is most severe in some of the richest farming areas; Iowa loses topsoil at 30 times the rate of soil formation. Iowa has lost one-half its topsoil in only 150 years of farming -- soil that took thousands of years to form.

PLENTY OF PROTEIN: Nearly 7 million tons (metric) of animal protein is produced annually in the U.S. -- enough to supply every American man, woman and child with 75 grams of animal protein a day. With the addition of 34 grams of available plant protein, a total of 109 grams of protein is available per capita. The RDA (recommended daily allowance) per adult per day is 56 grams of protein for a mixed diet.

OUT TO PASTURE. If all the U.S. grain now fed to livestock were exported and if cattlemen switched to grass-fed production systems, less beef would be available and animal protein in the average American diet would drop from 75 grams to 29 grams per day. That, plus current levels of plant-protein consumption, would still yield more than the RDA for protein.

From "Livestock Production: Energy Inputs and the Environment" By David Pimentel

Sabtu, 21 November 2009

Everybody In The Pool of Green Innovation

Everybody in the Pool of Green Innovation

Published: October 31, 2009in the New York Times

A POPULAR children’s song has a refrain — “the more we get together the happier we’ll be” — that may sound like a simplistic formula for solving the complex challenges of climate change and sustainability. But if any area is ripe for sharing and collaboration among organizations, it’s green innovation.

Companies are sharing environmentally friendly innovations. They include an I.B.M. method to clean semiconductor wafers, top, and a DuPont process, right, that uses microorganisms to identify pollutants. Others are water-based shoe adhesives from Nike and a packing insert from I.B.M.

“We all want to save the planet, and the problems are bigger than any one firm, sector or country,” says Dr. Sarah Slaughter, coordinator of the M.I.T. Sloan Sustainability Initiative. In that spirit, several major corporations have taken inspiration from the open-source software movement and are experimenting with forums for sharing environmentally friendly innovations and building communities around them. The first such effort, the Eco-Patent Commons, was started in January 2008 by I.B.M., Nokia, Pitney Bowes and Sony in collaboration with the World Business Council for Sustainable Development.

The concept is straightforward: Companies pledge environmental patents to the commons, and anyone can use them — free.

Many patented environmental technologies are not strategic, so sharing maximizes the social benefit without sacrificing competitive advantage, says Wayne Balta, vice president of corporate environmental affairs and product safety at I.B.M. For instance, I.B.M. contributed a recyclable cardboard packaging insert that requires less fossil fuel to create and transport than the foam inserts that are now commonly used.

Other examples include a DuPont method for better detecting pollution in soil, air or water by using a microorganism that produces light when exposed to a pollutant. There are also methods from Xerox for removing toxic waste from contaminated groundwater, as well as a cleaning technique for semiconductor wafers from I.B.M. that uses ozone gas and eliminates chemical contaminants that result from other processes.

By assembling these patents in one easily accessible location — anyone can search through them on the council’s Web site — the hope is to encourage their widespread adoption, particularly in the developing world. Since its start, the commons has grown to 100 patents from 31, with 11 companies now participating.

Although there are no formal mechanisms for tracking who has used the commons, participating companies are sometimes contacted by users. For instance, Mr. Balta said that Yale had put into effect an I.B.M. method for decreasing the use of hazardous solvents in its quantum computing device research.

The Creative Commons, a nonprofit organization that previously developed licensing programs to help in sharing creative and scientific content, is also planning to branch out into the environmental arena.

In collaboration with Nike and Best Buy, it plans to start a sharing initiative, the Green Xchange, in early 2010. The program will include both patented technologies and forums for continuing exchange of innovations such as Best Buy’s system for rating the sustainability of a supply chain. Companies that contribute patents to the Green Xchange will have the option of charging users a fixed annual licensing fee and can also restrict any licensing by rivals or for competitive use. In addition, even if no annual fee is charged, patent users must register so there is a record of who is using what technology.

Though more complex than that of Eco-Patent Commons, the structure of Green Xchange will yield greater numbers of high-quality inventions, says John Wilbanks, GreenXchange coordinator and vice president for science at Creative Commons.

“We don’t depend on altruism,” Mr. Wilbanks says. “This system helps the environment while enabling a firm to make money from patents in applications outside its core business.”

For instance, Nike’s air-bag patent for cushioning shoes is crucial to its core shoe business, but may have environmental benefits in other industries — perhaps in prolonging the useful life of tires. Green Xchange could enable Nike to license the air-bag technology selectively to noncompeting companies.

ACCORDING to Kelly Lauber, a global director in Nike’s Sustainable Business and Innovation Lab, sharing technology can have tremendous environmental impact. By sharing its water-based adhesive technology and working with footwear makers, Ms. Lauber estimates that average levels of environmentally harmful solvents used by Nike’s suppliers have decreased to less than 15 grams per pair of shoes from 350 in 1997.

Perhaps the biggest upside of Green Xchange may come from the development of communities that collaborate in innovation and the exchange of ideas. To encourage that kind of interaction, Salesforce.com will provide a search engine, making it easy to find patents. And collaboration platforms from companies like 2degrees and nGenera should make it easy to identify companies with common interests.

Despite the obvious advantages, sharing patents isn’t as easy as it might sound.

“Numerous features of the intellectual property system, particularly the ability of companies to claim large swaths of technology through patents, play havoc with collaborative efforts,” says Josh Lerner, a professor at Harvard Business School.

Henry Chesbrough, the executive director of the Center for Open Innovation at the University of California, Berkeley, says it is surprisingly hard to give away technologies. “If it is not done carefully,” he said, “the companies that use a donated technology might find themselves liable for infringement of another company’s patent.”

Both the Eco-Patent Commons and the Green Xchange pose organizational challenges for participating companies.

“Deciding which patents to pledge or license to a commons,” says Andrew King, a professor at the Tuck School of Business at Dartmouth, “requires that the legal counsel, R.& D. staff, business unit and corporate sustainability groups all work together, and most organizations just aren’t set up for that.”

Weaving corporate togetherness, it seems, isn’t so easy — though green innovations offer many more reasons to try.

Mary Tripsas is an associate professor in the entrepreneurial management unit at the Harvard Business School.

Kamis, 19 November 2009

To Cut Global Warming, Swedes Study Their Plates

From The "By Degrees" series in the New York Times

This is the ninth in a series of articles about stopgap measures that could limit global warming. Future articles will address industry and cars.

Previous Articles in the Series »

STOCKHOLM — Shopping for oatmeal, Helena Bergstrom, 37, admitted that she was flummoxed by the label on the blue box reading, “Climate declared: .87 kg CO2 per kg of product.”

“Right now, I don’t know what this means,” said Ms. Bergstrom, a pharmaceutical company employee.

But if a new experiment here succeeds, she and millions of other Swedes will soon find out. New labels listing the carbon dioxide emissions associated with the production of foods, from whole wheat pasta to fast food burgers, are appearing on some grocery items and restaurant menus around the country.

People who live to eat might dismiss this as silly. But changing one’s diet can be as effective in reducing emissions of climate-changing gases as changing the car one drives or doing away with the clothes dryer, scientific experts say.

Click here to read the full article.

Rabu, 18 November 2009

Cows, Environment, Food and People

From our friend Ananda's excellent blog "Servant of The Servants"

Cows, Environment, Food and People

U.S. could feed 800 million people with grain that livestock eat, Cornell ecologist advises animal scientists. Future water and energy shortages predicted to change face of American agriculture.

Grain-fed livestock consumes resources far out of proportion to the yield, accelerates soil erosion, affects world food supply and will be changing in the future.

"If all the grain currently fed to livestock in the United States were consumed directly by people, the number of people who could be fed would be nearly 800 million," David Pimentel, professor of ecology in Cornell University's College of Agriculture and Life Sciences, reported at the July 24-26 meeting of the Canadian Society of Animal Science in Montreal. Or, if those grains were exported, it would boost the U.S. trade balance by $80 billion a year, Pimentel estimated.

With only grass-fed livestock, individual Americans would still get more than the recommended daily allowance (RDA) of meat and dairy protein, according to Pimentel's report, "Livestock Production: Energy Inputs and the Environment."

An environmental analyst and longtime critic of waste and inefficiency in agricultural practices, Pimentel depicted grain-fed livestock farming as a costly and nonsustainable way to produce animal protein. He distinguished grain-fed meat production from pasture-raised livestock, calling cattle-grazing a more reasonable use of marginal land.

Animal protein production requires more than eight times as much fossil-fuel energy than production of plant protein while yielding animal protein that is only 1.4 times more nutritious for humans than the comparable amount of plant protein, according to the Cornell ecologist's analysis.

Tracking food animal production from the feed trough to the dinner table, Pimentel found broiler chickens to be the most efficient use of fossil energy, and beef, the least. Chicken meat production consumes energy in a 4:1 ratio to protein output; beef cattle production requires an energy input to protein output ratio of 54:1. (Lamb meat production is nearly as inefficient at 50:1, according to the ecologist's analysis of U.S. Department of Agriculture statistics. Other ratios range from 13:1 for turkey meat and 14:1 for milk protein to 17:1 for pork and 26:1 for eggs.)

Animal agriculture is a leading consumer of water resources in the United States, Pimentel noted. Grain-fed beef production takes 100,000 liters of water for every kilogram of food. Raising broiler chickens takes 3,500 liters of water to make a kilogram of meat. In comparison, soybean production uses 2,000 liters for kilogram of food produced; rice, 1,912; wheat, 900; and potatoes, 500 liters. "Water shortages already are severe in the Western and Southern United States and the situation is quickly becoming worse because of a rapidly growing U.S. population that requires more water for all of its needs, especially agriculture," Pimentel observed.

Livestock are directly or indirectly responsible for much of the soil erosion in the United States, the ecologist determined. On lands where feed grain is produced, soil loss averages 13 tons per hectare per year. Pasture lands are eroding at a slower pace, at an average of 6 tons per hectare per year. But erosion may exceed 100 tons on severely overgrazed pastures, and 54 percent of U.S. pasture land is being overgrazed.

"More than half the U.S. grain and nearly 40 percent of world grain is being fed to livestock rather than being consumed directly by humans," Pimentel said. "Although grain production is increasing in total, the per capita supply has been decreasing for more than a decade. Clearly, there is reason for concern in the future."

source: Cornell University Science News

Selasa, 17 November 2009

Nudging Recycling From Less Waste To None

Sara Marshall peers into a drop-off point for recycling in Nantucket. The town is a leader in "zero waste."
Published: October 19, 2009

At Yellowstone National Park, the clear soda cups and white utensils are not your typical cafe-counter garbage. Made of plant-based plastics, they dissolve magically when heated for more than a few minutes.

At Ecco, a popular restaurant in Atlanta, waiters no longer scrape food scraps into the trash bin. Uneaten morsels are dumped into five-gallon pails and taken to a compost heap out back.

And at eight of its North American plants, Honda is recycling so diligently that the factories have gotten rid of their trash Dumpsters altogether.

Across the nation, an antigarbage strategy known as “zero waste” is moving from the fringes to the mainstream, taking hold in school cafeterias, national parks, restaurants, stadiums and corporations.

The movement is simple in concept if not always in execution: Produce less waste. Shun polystyrene foam containers or any other packaging that is not biodegradable. Recycle or compost whatever you can.

Though born of idealism, the zero-waste philosophy is now propelled by sobering realities, like the growing difficulty of securing permits for new landfills and an awareness that organic decay in landfills releases methane that helps warm the earth’s atmosphere.

“Nobody wants a landfill sited anywhere near them, including in rural areas,” said Jon D. Johnston, a materials management branch chief for the Environmental Protection Agency who is helping to lead the zero-waste movement in the Southeast. “We’ve come to this realization that landfill is valuable and we can’t bury things that don’t need to be buried.”

Americans are still the undisputed champions of trash, dumping 4.6 pounds per person per day, according to the E.P.A.’s most recent figures. More than half of that ends up in landfills or is incinerated.

But places like the island resort community of Nantucket offer a glimpse of the future. Running out of landfill space and worried about the cost of shipping trash 30 miles to the mainland, it moved to a strict trash policy more than a decade ago, said Jeffrey Willett, director of public works on the island.

The town, with the blessing of residents concerned about tax increases, mandates the recycling not only of commonly reprocessed items like aluminum, glass and paper but also of tires, batteries and household appliances.

Jim Lentowski, executive director of the nonprofit Nantucket Conservation Foundation and a year-round resident since 1971, said that sorting trash and delivering it to the local recycling and disposal complex had become a matter of course for most residents.

The complex also has a garagelike structure where residents can drop off books and clothing and other reusable items for others to take home.

The 100-car parking lot at the landfill is a lively meeting place for locals, Mr. Lentowski added. “Saturday morning during election season, politicians hang out there and hand out campaign buttons,” he said. “If you want to get a pulse on the community, that is a great spot to go.”

Mr. Willett said that while the amount of trash that island residents carted to the dump had remained steady, the proportion going into the landfill had plummeted to 8 percent.

By contrast, Massachusetts residents as a whole send an average of 66 percent of their trash to a landfill or incinerator. Although Mr. Willett has lectured about the Nantucket model around the country, most communities still lack the infrastructure to set a zero-waste target.

Aside from the difficulty of persuading residents and businesses to divide their trash, many towns and municipalities have been unwilling to make the significant capital investments in machines like composters that can process food and yard waste. Yet attitudes are shifting, and cities like San Francisco and Seattle are at the forefront of the changeover. Both of those cities have adopted plans for a shift to zero-waste practices and are collecting organic waste curbside in residential areas for composting.

Food waste, which the E.P.A. says accounts for about 13 percent of total trash nationally — and much more when recyclables are factored out of the total — is viewed as the next big frontier.

When apple cores, stale bread and last week’s leftovers go to landfills, they do not return the nutrients they pulled from the soil while growing. What is more, when sealed in landfills without oxygen, organic materials release methane, a potent heat-trapping gas, as they decompose. If composted, however, the food can be broken down and returned to the earth as a nonchemical fertilizer with no methane by-product.

Green Foodservice Alliance, a division of the Georgia Restaurant Association, has been adding restaurants throughout Atlanta and its suburbs to its so-called zero-waste zones. And companies are springing up to meet the growth in demand from restaurants for recycling and compost haulers.

Steve Simon, a partner in Fifth Group, a company that owns Ecco and four other restaurants in the Atlanta area, said that the hardest part of participating in the alliance’s zero-waste-zone program was not training his staff but finding reliable haulers.

“There are now two in town, and neither is a year old, so it is a very tentative situation,” Mr. Simon said.

Still, he said he had little doubt that the hauling sector would grow and that all five of the restaurants would eventually be waste-free.

Packaging is also quickly evolving as part of the zero-waste movement. Bioplastics like the forks at Yellowstone, made from plant materials like cornstarch that mimic plastic, are used to manufacture a growing number of items that are compostable.

Steve Mojo, executive director of the Biodegradable Products Institute, a nonprofit organization that certifies such products, said that the number of companies making compostable products for food service providers had doubled since 2006 and that many had moved on to items like shopping bags and food packaging.

The transition to zero waste, however, has its pitfalls.

Josephine Miller, an environmental official for the city of Santa Monica, Calif., which bans the use of polystyrene foam containers, said that some citizens had unwittingly put the plant-based alternatives into cans for recycling, where they had melted and had gummed up the works. Yellowstone and some institutions have asked manufacturers to mark some biodegradable items with a brown or green stripe.

Yet even with these clearer design cues, customers will have to be taught to think about the destination of every throwaway if the zero-waste philosophy is to prevail, environmental officials say.

“Technology exists, but a lot of education still needs to be done,” said Mr. Johnston of the E.P.A.

He expects private companies and businesses to move faster than private citizens because momentum can be driven by one person at the top.

“It will take a lot longer to get average Americans to compost,” Mr. Johnston said. “Reaching down to my household and yours is the greatest challenge.”

A version of this article appeared in print on October 20, 2009, on page A1 of the New York edition.

Sabtu, 14 November 2009

Food Experts Worry As Population And Hunger Grow

Experts Worry as Population and Hunger Grow


Published: October 21, 2009

ROME — Scientists and development experts across the globe are racing to increase food production by 50 percent over the next two decades to feed the world’s growing population, yet many doubt their chances despite a broad consensus that enough land, water and expertise exist.

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Jose Cendon/Agence France-Presse — Getty Images

A feeding center in Ethiopia last year. Experts say the green revolution's concentration on wheat and rice will not work in Africa.

Andrew Biraj/Reuters

Women spreading wet rice to dry in Bangladesh after record rains in July. South Asia is among the regions that need new food production the most.

Jayanta Shaw/Reuters

Farmers work in a rice field in eastern India.

The number of hungry people in the world rose to 1.02 billion this year, or nearly one in seven people, according to the United Nations Food and Agriculture Organization, despite a 12-year concentrated effort to cut the number.

The global financial recession added at least 100 million people by depriving them of the means to buy enough food, but the numbers were inching up even before the crisis, the United Nations noted in a report last week.

“The way we manage the global agriculture and food security system doesn’t work,” said Kostas G. Stamoulis, a senior economist at the organization. “There is this paradox of increasing global food production, even in developing countries, yet there is hunger.”

Agronomists and development experts who gathered in Rome last week generally agreed that the resources and technical knowledge were available to increase food production by 50 percent in 2030 and by 70 percent in 2050 — the amounts needed to feed a population expected to grow to 9.1 billion in 40 years.

But the conundrum is whether the food can be grown in the developing world where the hungry can actually get it, at prices they can afford. Poverty and difficult growing conditions plague the places that need new production most, namely sub-Saharan Africa and South Asia.

A straw poll of the experts in Rome on whether the world will be able to feed its population in 40 years underscored the uncertainty surrounding that question: 73 said yes, 49 said no and 15 abstained.

The track record of failing to feed the hungry haunts the effort. But other important uncertainties also give pause. The effect climate change will have on weather and crops remains an open question. The so-called green revolution of the 1960s and ’70s ended the specter of mass famines then, but the environmental cost of chemical fertilizers and heavy irrigation has spurred a bitter divide over the right ingredients for a second one.

In addition, the demand for biofuels may use up crop land. And as scores of food riots in 2008 showed, oil prices and other income shocks can quickly drive millions more people into hunger, sending ripples of instability around the world.

A summit meeting of world leaders in Rome on Nov. 16 is expected to address the future food demands. Since July, the richest countries have ostensibly committed more than $22 billion to the effort over the next three years.

The final meeting of Group of 8 leaders that month in L’Aquila, Italy, started with $15 billion already on the table. Then President Obama gave a speech evoking the Kenyan village where his father herded goats as a child. In countless villages like it, millions of people face hunger daily, Mr. Obama said, and after he finished speaking, the pledges jumped by $5 billion, according to several officials present.

Yet those pledges remain murky. Senior diplomats estimate that less than a third to slightly more than half of the money represents new commitments that had not already been made, with the rest being repackaged existing aid.

Washington and its European allies have also jostled over putting the money in a World Bank account, the American preference, or working through United Nations or domestic aid agencies, an approach the Europeans favor. An initial American proposal of one unified fund was largely rejected. How policy and priorities will be established on a worldwide scale is also a central negotiating hurdle.

“The good news is that the political class considers this important and wants to do something about it,” said one financial official involved in the talks who was not authorized to speak publicly. “But nobody has 20 billion and spare change in their sock drawer.”

The United States, with the largest pledge, $3.5 billion, organized a conference in Washington along with Italy last month in an unsuccessful attempt to nail down the pledges so that Secretary of State Hillary Rodham Clinton could announce the results during the United Nations General Assembly.

“It is a little bit difficult — I cannot give you a precise figure per country,” said Renzo Rosso, a senior Italian aid official. “But the most difficult part will be to make them all work together.”

Mrs. Clinton often calls agriculture aid a critical issue, saying the administration supports domestic efforts in developing nations and improvements in production by small farmers, particularly women. Philip J. Crowley, a department spokesman, said, “We are trying to shift away from emergency aid toward agricultural development.”

Agriculture was once a pillar of international aid programs, with World Bank figures showing that it constituted 17 percent of all foreign assistance in 1980, said Christopher Delgado, the bank’s agriculture adviser. But the emphasis declined as the number of hungry people dropped to its lowest recent level, 825 million people, around 1996. By 2000, agriculture aid had shrunk to 4 percent, he said, although it has since ticked up slowly.

World leaders often evoke the green revolution of the 1960s and ’70s as an inspiration for future progress. The original revolution employed new seeds, fertilizers and irrigation in Asia and Latin America to stave off famines affecting millions.

But the green revolution’s concentration on wheat and rice would be impossible to copy in parts of Asia and in Africa, experts say, noting that Africa has seven or eight staple crops, wildly varied growing conditions and only an estimated 7 percent of farmland irrigated.

Then there is the question of genetically modified crops. No issue provokes such an emotional division among agronomists, who debate whether they constitute the building blocks of a second green revolution or a health menace.

“Who is steering this fear and global paranoia about the G.M. cotton and all these G.M. crops?” said Hans P. Binswanger-Mkhize, a South African agriculture consultant. “Show us where the corpses are — the corpses of earthworms, the corpses of bees, the corpses of antelopes and the corpses of humans. Nobody has yet ever shown us a corpse.”

Opponents respond that organic farming is critical to producing healthy food and reducing global warming. Widespread use of nitrogen fertilizers has contributed heavily to greenhouse gases, and the vast water resources required for irrigation are not sustainable, they contend.

“We have a billion hungry people today, so we can’t say the green revolution solved the problem,” said Markus Arbenz, the executive director of the International Federation of Organic Agriculture Movements. “We can’t just cut and paste the solution from the 1960s with G.M. crops.”

A version of this article appeared in print on October 22, 2009, on page A6 of the New York Times.

Jumat, 13 November 2009

How Food Shapes Our World

Every day, in a city the size of London, 30 million meals are served. But where does all the food come from? Architect Carolyn Steel discusses the daily miracle of feeding a city, and shows how ancient food routes shaped the modern world.

Click here to head on over to TED to check out an engrossing video presentation by Mrs. Steel.