Barack Obama and David Attenborough discuss the natural world
June 28, 2015, 4:21 p.m. by Michael d'Estries
The president invited the famed naturalist to the White House to celebrate his 89th birthday.
6 things to know about Earth's 6th mass extinction
June 23, 2015, 3:45 p.m. by Russell McLendon
A new study reports the long-suspected mass extinction of wildlife is 'already under way.'
The Pliocene called. It wants its CO2 levels back.
May 8, 2015, 11:24 a.m. by Russell McLendon
Earth just averaged 400 parts per million of carbon dioxide for a month, which hasn't happened in human history — and possibly not since the Pliocene Epoch about 3 million years ago.
Battling climate change requires actions big and small
April 22, 2015, 2:09 p.m. by Ruth Greenspan Bell and Elke U. Weber, Environmental Health News
Regulations can make a difference but we must also change how people live their everyday lives to have any real impact.
Which U.S. states worry the most about climate change?
April 21, 2015, 12:09 p.m. by Shannon Hall, LiveScience
Americans' opinions about climate change are as divided as they are diverse.
Scientist enlists forest fungi to save their own habitat
April 9, 2015, 1:58 p.m. by Russell McLendon
Instead of synthetic insecticides, entomologist Rich Hofstetter is recruiting native fungi to protect forests from bark beetles.
Michael Bloomberg gifts Sierra Club $30M to fund anti-coal efforts
April 8, 2015, 11:28 a.m. by Michael d'Estries
Billionaire philanthropist and former mayor says he's 'doubling down' on efforts to reduce carbon emissions and to replace half the nation's coal with clean energy by 2017.