Posted by Emily Sohn Fri Jan 20, 2012 12:01 PM ET | 0
In the 1970s, the Environmental Protection Agency took thousands of photos from around the country, now it wants you to help them see what's changed. Read more
Posted by Tim Wall Tue Nov 15, 2011 02:03 PM ET | 0
The 65-foot tall Capitol Christmas tree is passing over the river and through the woods, to Washington D.C. it goes. Read more
Posted by Tim Wall Thu Nov 10, 2011 11:26 AM ET | 0
A recent test shows aerial drones can monitor fires from the sky and keep firefighters safe. Read more
Posted by Jennifer Viegas Thu Nov 10, 2011 08:04 AM ET | 0
Conservationists are fighting a rush to mine for gold with an unlikely weapon -- a miniscule organism. Read more

Posted by Sarah Simpson Wed Nov 9, 2011 05:50 PM ET | 0
Teasing apart the effects of noise on birds shows humans are driving their feathered friends away. Read more
Posted by Tim Wall Thu Oct 27, 2011 07:18 AM ET | 0
The iconic fiery fall foliage of the Yankee forest is showing up later as falls get warmer and winters milder. Read more
Posted by Tim Wall Fri Oct 21, 2011 12:56 PM ET | 0
A moratorium on cutting the Brazilian Amazon to plant soy may have reduced soy's direct impact on the forest for the past five years, but a proposed amendment to the Brazilian forest code could re-open the forest to soy. Read more
Posted Thu Sep 22, 2011 01:03 PM ET | 0
Discover the secrets of why tree leaves change yellow or red in the autumn. Read more

Posted Tue Sep 20, 2011 02:02 PM ET | 0
How well do we know the fungus among us? Some mushrooms have a magical, mysterious history. Read more

Posted by Tim Wall Tue Aug 23, 2011 04:59 PM ET | 0
The estimate also comes with a price tag for describing all these Earth species, most of which are still unknown: $364 billion. Read more
Posted Thu Aug 18, 2011 01:09 PM ET | 0
Deforestation in Brazil's Amazon increased by 15 percent during the past 12 months. Read more

Posted by Tim Wall Tue Aug 16, 2011 06:06 AM ET | 0
After scouring through ancient trash heaps, bioarcheologists have reconstructed the intense agricultural history of the Peruvian Ica Valley. Read more
Posted by Tim Wall Mon Aug 1, 2011 01:44 PM ET | 0
Peatlands are often used as an alternative fuel to wood, but their carbon value is as competitive as forests if not more so, according to scientists studying peatland biogeochemistry. Read more
Posted Tue Jul 12, 2011 12:14 PM ET | 0
Cities can be of surprising help in soaking up carbon pollution. Read more

Posted by Tim Wall Thu Jun 9, 2011 02:31 PM ET | 0
Tropical forests under sustainable management have doubled in the last five years, but that's a small fraction of the total. Read more
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