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  • Drought Threatens Nomads in Horn of Africa
    A widespread drought is killing the livelihoods of pastoral nomads in the region known as the Horn of Africa. Cows, goats and other livestock have all died due to the water shortage. The devastation poses the question of whether the lifestyle of pastoralists -- who move between Somalia, Kenya and Ethiopia foraging for food and water for their herds -- can be sustained.
  • The Capitol dome is seen behind the Capitol Power Plant, which provides power to buildings in the Capitol complex in Washington, D.C.
    Obama To Lay Out Broad Plan To Address Climate Change
    President Obama is expected to announce a sweeping plan to address climate change this afternoon.
  • San Diego Water Authority Enters High-Stakes Water Fight
    A trial beginning Tuesday in San Francisco will test the San Diego County Water Authority's claim that the region's 3.1 million residents are subsidizing nearly all the rest of Southern California.
  • Biologists Laura Herren and Brian Lapointe bag red sea grass at Shorty's Pocket, a site in the Indian River lagoon. Manatees have died from eating the toxic macro algae.
    With Murky Water And Manatee Deaths, Lagoon Languishes
    Something is wrong in Florida's Indian River Lagoon.
  • The U.S. stores emergency water for Mexico at Lake Mead, the reservoir behind Hoover Dam near Las Vegas.
    US And Mexico Make Water History
    U.S. and Mexican commissioners have signed an amendment to a 1944 treaty, which allocates water from the Colorado River to Mexico.
  • Citing continued signs of weakness, the Federal Reserve said it will keep aiming for low interest rates.
    Why The Fed Decided Not To Change Course
    Gas prices are down more than 7 percent from last year. Grocery costs haven't budged lately. And -- just in time for Halloween -- the price of candy is down 2.3 percent from last year, according to the government's consumer price index released Wednesday.
  • Hank Shaw, author of
    Mushroom Foraging: When The Fun(gi) Hunt Gets Out Of Hand
    The first heavy rains of the season fell two weeks ago at Salt Point State Park, on the northern California coast, and now ranger Todd Farcau is waiting anxiously for the forest floor to erupt with mushrooms.
  • The community of Greensburg, Kan., was hit hard by an F5 tornado in 2007. The event inspired one resident to run for mayor.
    Kansas Mayor Says Sustainability Is About Community, Not Politics
    Today's political polarization makes it seem harder than ever to tackle climate change. Republican Bob Dixson says the goals of going green aren't only for liberals. His town of Greensburg was hit by an unusually strong tornado, and now he's working on a White House task force to prepare communities like his.
  • Vegetation like the kind growing here at Michigan State University's Kellogg Biological Station could one day be used to feed small biofuel refineries spread throughout the Midwest.
    Could Some Midwest Land Support New Biofuel Refineries?
    Land that isn't in good enough condition to grow crops could be used to produce substantial amounts of liquid biofuels, a new study claims. But there are many concerns about the study, and about the future of advanced biofuels in the U.S. and abroad.
  • This map shows the potential biomass collection within 10 states. Each circle represents an area of about 7,800 square miles, which could produce about 23 million gallons of ethanol per year. A gigagram, or Gg, is about 1,100 tons.
    Could Some Midwest Land Support New Biofuel Refineries?
    Millions of acres of marginal farmland in the Midwest -- land that isn't in good enough condition to grow crops -- could be used to produce liquid fuels made from plant material, according to a study in Nature. And those biofuels could, in theory, provide about 25 percent of the advanced biofuels required by a 2007 federal law.
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