Is there a safe level of carbon dioxide in the atmosphere to prevent "dangerous anthropogenic interference" in the climate?
With greenhouse gas emissions continuing to rise, strong efforts will be required to reverse global warming
Was the climate really hotter during medieval times? David Biello reports
The Future of Climate Policy Could Be Found in Copenhagen
The U.S. can lead the world to a historic emissions agreement by committing to its own sweeping energy transformation
Special Report: Climate Change
Examining the state of the science on climate change
World's First Fuel Cell Ship Docks in Copenhagen
Can fuel cells and natural gas help reduce emissions from shipping?
Draft text of new "Copenhagen Accord"
Here is the latest draft text of the "Copenhagen Accord" put forward on December 18 by the U.S., China, India and South Africa, among other countries, at the climate summit in the Danish capital...
Climate change cover-up? You better believe it
Was Sen. James Inhofe right when he declared 2009 the year of the climate contrarian? A slew of emails stolen from the University of East Anglia's Climatic Research Unit highlight definite character flaws among some climate scientists—including an embarrassing attempt to delete emails that discussed the most recent report from the United Nations Intergovernmental Panel on Climate Change—while also exposing what looks like a failure of scientists to acknowledge a halt to global warming in the past decade...
Lonely senator says Copenhagen necessary for climate action in U.S.
COPENHAGEN—Not a lot of U.S. Senators will make the trek to the United Nations' climate summit here—a delegation led by California Sen. Barbara Boxer will stay home to focus on the ongoing health care debate while arch-contrarian Senator James Inhofe (R–Okla.) stopped in but briefly...
Carbon Dioxide Auction Launches U.S. Effort to Combat Climate Change
Six northeastern states auction off the right to emit global warming pollution
Accord of Sorts in Copenhagen
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...
Climate change is ridding the world's tropical mountain ranges of ice
COPENHAGEN—The Altiplano, or high plain, of Bolivia and Peru is getting a new climate. In the past 60 years temperatures have risen, rainfall patterns have changed and soils have begun to dry out even further...
Linked Challenges: Climate Change and Energy Use
Are national governments prepared to offer more than hot air on climate change in Copenhagen this December? David Biello reports
First Look at Carbon Capture and Storage in a West Virginia Coal-Fired Power Plant [Slide Show]
The world's first power facility to capture and store a portion of its carbon dioxide has begun operating in Appalachia
The Future of Alternative Energy
Geothermal, solar thermal, and even nuclear power could provide alternatives to today's carbon-based fuel sources
The Future of Nuclear Power
The U.S.--and the world--is gearing up to build a potentially massive fleet of new nuclear reactors, in part to fight climate change. But can nuclear power handle the load?
Is birth control the answer to environmental ills?
Population growth, now at roughly 78 million extra people per year, is the don't-go-there zone of modern environmentalism and political discourse.
But let's go there for the moment: The biodiversity crisis...
How Sunlight Controls Climate
New computer models begin to suggest how changes in the sun's strength might change weather patterns
Just How Sensitive Is Earth's Climate to Atmospheric Carbon Dioxide?
Two new studies look far back in geologic time to determine how sensitive the global climate is to atmospheric CO2 levels
Farmed Out: How Will Climate Change Impact World Food Supplies?
A new study attempts to estimate the effects of climate change on global agriculture--and outline ways to mitigate its most dire consequences
Combating Climate Change: Farming Out Global Warming Solutions
Changes to agricultural practice and forestry management could cut greenhouse gas emissions, buying time to develop alternative technologies
Carbon Offsets: Fact or Fiction?
Everyone from motorists to television producers are buying offsets to save the climate. But do they work? David Biello reports
Climate Change Begins at Home: Small Steps to Cut Greenhouse Emissions Can Lead to Big Results
A new study shows how household improvements, such as better insulation, could cut U.S. carbon emissions by more than 7 percent
Can Climate Change Cause Conflict? Recent History Suggests So
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
Sinking Global Warming: Is There a Reliable Way to Track Atmospheric Carbon Dioxide Levels?
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?
Is geoengineering humanity's last hope to avoid catastrophic global warming?
Do you really want to start messing with the atmosphere? If not, then stop emitting so much CO 2 . Or so argues the U.K.-based Royal Society, the same people who brought you Isaac Newton, Charles Darwin and Stephen Hawking...
Making Carbon Markets Work
Limiting climate change without damaging the world economy depends on stronger and smarter market signals to regulate carbon dioxide
* Supplement: Extended version