Global Warming
Interview: Steven Amstrup
A new study spotlights the plight of the polar bear, but there's still time to help the beloved creature
Teaming up with Thoreau
One hundred fifty years after the publication of Walden, Henry David Thoreau is helping scientists monitor global warming
Chronicling the Ice
Long before global warming became a cause célà¨bre, Lonnie Thompson was extracting climate secrets from ancient glaciers
The World After Oil
As the planet warms up, eco-friendly fuels can't get here fast enough
Venice's Uncertainty
A new floodgate system should protect the city from high tides—unless climate change interferes
Ahead in the Clouds
Susan Solomon helped patch the ozone hole. Now, as a leader of a major United Nations report—out this month—she's going after global warming
Frozen in Time
Glaciers in the Pacific Northwest have recorded hundreds of years of climate history, helping researchers plot how quickly the planet is warming
Storm Warnings
Is global warming to blame for the intensity of recent Atlantic hurricanes? While experts debate that question, they agree that tempests are headed our way
Uphill Battle
As the climate warms in the cloud forests of the Andes, plants and animals must climb to higher, cooler elevations or die
Al Gore Discusses "An Inconvenient Truth"
Environmentalist Al Gore talks about his new movie
Baked Alaska
A unique study documents the disappearance of Alaska's glaciers, blamed on global warming
Fire in the Hole
Raging in mines from Pennsylvania to China, coal fires threaten towns, poison air and water, and add to global warming
Will Tuvalu Disappear Beneath the Sea?
Global warming threatens to swamp a small island nation
Gas Guzzlers
New research shows how microscopic diatoms remove carbon dioxide from the atmosphere and may help keep the planet from overheating
Phenomena, Comment and Notes
Experiments at sea show we can cause phytoplankton to bloom in areas where it otherwise would not
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