Forest Service Chief Tom Tidwell has directed the agency's regions and research stations to jointly produce draft "landscape conservation action plans" by March 1
The people of the world continue to grapple with the question of how best to combat climate change
Evidence for human interference with Earth’s climate continues to accumulate
With greenhouse gas emissions continuing to rise, strong efforts will be required to reverse global warming
Is there a safe level of carbon dioxide in the atmosphere to prevent "dangerous anthropogenic interference" in the climate?
Was the climate really hotter during medieval times? David Biello reports
Global leaders target health benefits in advance of Copenhagen meeting.
Rising temperatures could be spurring the growth of mountaintop Great Basin bristlecone pines
Replacing wood and coal with electricity could help reduce poverty and pollution
A survey delving into the past 30 years in sub-Saharan Africa reveals that temperature changes match up with a significant increase in the likelihood of civil war
As the United States gears up for Thanksgiving and its busiest travel week of the year, might high-speed trains get people where they're going faster in the near future?
Acting Editor in Chief Mariette DiChristina introduces the December 2009 issue of Scientific American
Industry experts argue old reactors could last another 50 years, or more.
E-mails and documents have been taken from the University of East Anglia.
According to the United Nations's Food and Agriculture Organization, overall tropical deforestation rates this decade are 8.5 percent higher than during the 1990s
CO2 emissions rise as natural sinks slow, but how can scientists precisely track this greenhouse gas, especially in advance of a potential global treaty to reduce its emissions?
Access to contraception could tackle global warming, says United Nations.
Polar region was unexpectedly warm between ice ages.
Tree ring expert Kevin Anchukaitis, of the tree ring lab at the Lamont-Doherty Earth Observatory, part of Columbia University's Earth Institute, talks about the information available in tree rings...