Unsafe levels of toxins in drinking water in northwest Ohio are linked to algae blooms in Lake Erie. The blooms are fed by agricultural runoff, but that's not the full story.
UN climate change chief Christiana Figueres is a long distance runner and constant traveler who calls wherever she is "home." Here is a thumbnail profile.
How UN climate change chief Christiana Figueres became a fierce crusader to lower Earth's thermostat. A visceral connection to the planet – from the now-extinct golden toads of her childhood in the Costa Rican jungle to shrinking glaciers – moves her to tears.
Graduating US Naval Academy midshipmen march into the Academy's graduation and commissioning ceremony in Annapolis, Md., May 26.
Previous agreements to restrict greenhouse-gas emissions, including Kyoto, have largely failed. To curb global warming, negotiators are hoping countries will design and enforce their own cuts.
'We're committed to getting this done,' the White House's John Podesta said Friday of a new EPA proposal to limit carbon emissions from power plants. A business report showing a hit to the US economy contained 'fantasy job loss numbers,' he said.