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  • Recent events in the Middle east and northern Africa have show that the supply and price of food can lead to major social unrest and even the downfall of a government. Many in the developed world take food for granted, but in most developing nations it can be a daily struggle and a life-and-death issue. The global recession of 2008-09 took some the wind out of surging agricultural prices, but there's growing concern that globalization will ultimately tax food supplies. Population and income grow

    Many in the developed world take food for granted, but in most developing nations it can be a daily struggle and a life-and-death issue. Click to see which countries are most vulnerable to food shock.

  • famers_market_200.jpg

    Farmers markets are popping up across the country as often as a new crop of corn. But the problem of making a profit—for themselves and the farmers that supply them—grows as well.

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    A growing interest in small-scale agriculture  — blending entrepreneurism and sustainability — is beginning to reverse a decades-long flight from the farm.

  • Reichstag Parliment building, Berlin, Germany

    Could there really be a "Green" German Chancellor one day? What would that mean? How "green" can Germany get? ... Questions I am being asked rather often these days - even and especially from outside Germany, says CNBC's Silvia Wadhwa.

  • A recent survey shows people in Hong Kong say it is acceptable to leave shark fin soup off banquet menus. The NYT reports.

  • Workers pull aboard boom being used to help block the flow of the oil spill from the Deepwater Horizon in Cat Bay on June 28, 2010 near Grand Isle, Louisiana.

    One year after the tragic BP oil spill, the cleanup isn't done and neither is the haggling over BP's  $20 billion dollar fund to compensate individuals and businesses over lost income.

  • CNBC Investing In Green Tech 2011

    The U.S. was an early leader in many areas, but has since slipped a bit. Some say cleantech could be the nest Internet and that the U.S. needs to exploit its considerable expertise. What do you think?

  • A boat works uses a protective boom to collect oil that has leaked from the Deepwater Horizon wellhead in the Gulf of Mexico.

    Exactly one year ago, on April 20th, 2010, shares in Transocean - already listed on the NYSE - started trading on the Swiss stock exchange.

  • Crisis in the Gulf

    Investing is a cold-hearted endeavor, and as the response to the BP spill evolved, investors tried to find ways to profit from it. Shares of oil-dispersant maker Nalco rose in the wake of the disaster but have since fallen, as its product is alleged to have been as bad for the ecology as the oil that spilled.

  • CNBC Investing In Green Tech 2011

    Oil and gas companies injected hundreds of millions of gallons of hazardous or carcinogenic chemicals into wells in more than 13 states from 2005 to 2009, according to an investigation by Congressional Democrats. The New York Times reports.

  • CNBC Investing In Green Tech 2011
  • CNBC Investing In Green Tech 2011

    Developing alternative fuels takes money and policies as much as it does will and time.  Take NASA as an example.

  • CNBC Investing In Green Tech 2011

    Optimists say there's plenty of untapped oil in the world. Skeptics say there's a finite amount and we're certain to run out. What do you think?

  • Winemaker Greg Allen walks between floating solar panels on a pond behind the Far Niente winery in Oakville, Calif. The winery is trying out a new approach in the volts-for-vines tradeoff, saving vineyard space by floating solar panels on a pond that recycles water left over from the winemaking process. (AP Photo/Eric Risberg)

    With the solar energy industry booming, companies large and small continue to look for ways to squeeze efficiencies out of decades-old technology. So why not 3D technology.

  • Stonyfield Farm yogurt cup made from plant-based Ingeo

    A growing industry of so-called bioplastics — plastics made out of plants like corn or sugarcane, or plastics that simply biodegrade — is rising up to meet the need of a small, but dedicated group of consumers who want green products.

  • Petrotech Oil Purification Unit Onsite

    The three-decade-old technology for industrial systems is not only affordable, but generates revenue for companies that use it — assuming they know about it.

  • Ultrapure Cerium

    Surging prices for many REMs and the possibility of hoarding have companies on the offensive, spurring a new effort to reclaim valuable elements from mountains of e-waste.

  • bastionhost_data_center_500.jpg

    With ever-increasing amounts of data being generated, energy-thirsty data centers are quickly becoming many firms’ most important green initiative.

  • greenGlobe_light_200x150.jpg

    We can win if we put more ingenuity into using resources that are close to home, rather than into figuring out new ways to snatch another barrel of oil from war zones in the Middle East or kilowatts of electricity from sources that will one day make our food and water glow in the dark, says Terry Tamminen