Copenhagen and Climate Change

Can fuel cells and natural gas help reduce emissions from shipping?

Working late into the night, negotiators from the world's nations agreed in principle to attempt to limit the global postindustrial temperature rise to 2 degrees Celsius. Steve Mirsky reports, with Christina Reed in Copenhagen

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

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

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?

The world's first power facility to capture and store a portion of its carbon dioxide has begun operating in Appalachia

The U.S. can lead the world to a historic emissions agreement by committing to its own sweeping energy transformation

A new study shows how household improvements, such as better insulation, could cut U.S. carbon emissions by more than 7 percent

Two new studies look far back in geologic time to determine how sensitive the global climate is to atmospheric CO2 levels

A new study attempts to estimate the effects of climate change on global agriculture--and outline ways to mitigate its most dire consequences

Are national governments prepared to offer more than hot air on climate change in Copenhagen this December? David Biello reports

New computer models begin to suggest how changes in the sun's strength might change weather patterns

Everyone from motorists to television producers are buying offsets to save the climate. But do they work? David Biello reports

Six northeastern states auction off the right to emit global warming pollution

Limiting climate change without damaging the world economy depends on stronger and smarter market signals to regulate carbon dioxide
* Supplement: Extended version

Examining the state of the science on climate change