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Mar 5, 2013 at 12:51 PM
The amount of heat-trapping carbon dioxide in the air jumped dramatically in 2012, making it very unlikely that global warming can be limited to another 2 degrees as many global leaders have hoped, new federal figures show.
Feb 10, 2013 at 1:38 PM
While solar is a far less polluting energy source than coal or natural gas, many panel makers are nevertheless grappling with a hazardous waste problem.
Feb 7, 2013 at 3:24 PM
Big changes are in store for the nation's forests as global warming increases wildfires and insect infestations, and generates more frequent floods and droughts, the U.S. Department of Agriculture warns in a report released Tuesday.
Dec 3, 2012 at 9:34 AM
The United States on Monday challenged China's view of how to split the burden of curbing carbon emissions, saying the rich-poor divide in past climate agreements has no place in a future pact to fight global warming.
Dec 2, 2012 at 10:11 AM
The amount of heat-trapping pollution the world spewed rose again last year by 3 percent. So scientists say it's now unlikely that global warming can be limited to a couple degrees, which is an international goal.
Nov 24, 2012 at 9:25 AM
During a year with a monster storm and scorching heat waves, Americans have experienced the kind of freakish weather that many scientists say will occur more often on a warming planet.
Jul 31, 2012 at 5:00 AM
The chronic drought that hit western North America from 2000 to 2004 left dying forests and depleted river basins in its wake and was the strongest in 800 years, scientists have concluded, but they say those conditions will become the “new normal”...
Jul 25, 2012 at 10:15 AM
When John Arensmeyer owned a high-tech company, he didn't feel that the organizations that lobbied on behalf of small business really represented him — or many other business owners.
Jun 17, 2012 at 10:57 AM
Putting a price on a natural bounty long taken for granted as free may sound impossible, even ridiculous. But after three decades on the fringes of serious policymaking, the idea is gaining traction.
May 7, 2012 at 12:06 PM
Potty humor just got prehistoric. A new study suggests that dinosaurs may have helped keep an already overheated world warmer with their flatulence and burps 200 million years ago.
Nov 21, 2011 at 2:34 PM
Heat-trapping greenhouse gases in the atmosphere are building up so high, so fast, that some scientists now think the world can no longer limit global warming to the level world leaders have agreed upon as safe.
Oct 31, 2011 at 7:27 AM
A prominent physicist and skeptic of global warming spent two years trying to find out if mainstream climate scientists were wrong. In the end, he determined they were right: Temperatures really are rising rapidly.
Sep 25, 2011 at 9:48 AM
Powerful evidence has poured in over the decades showing the "greenhouse effect" is real and is happening. And yet resistance to the idea among many in the U.S. appears to have hardened. What's going on?
Aug 28, 2011 at 2:24 PM
Sometime next month, on the steaming fringes of an Icelandic volcano, an international team of scientists will begin pumping "seltzer water" into a deep hole, producing a brew that will lock away carbon dioxide forever.
Jul 26, 2011 at 12:07 PM
Oregon State University has become the second-largest purchaser of green power of any university in the United States.