Greenhouse

U.S. cities committed to the Paris climate accord after President Trump announced the country's exit. But how much can urban areas do?

America's Pledge is part of a growing effort by local governments to meet the U.S. Paris Agreement goals.

Withdrawing from the Paris deal could put at least 1.4 extra gigatons of carbon dioxide in the atmosphere each year by 2025.

The Barents Sea near Svalbard is dotted with seafloor craters created about 11,600 years ago by methane hydrate eruptions.

Why use satellites to study Earth's climate? Researchers leading a new mission explain how images from space will help them analyze which parts of the Americas soak up the most carbon.

Engineers have taken a tip from Medusa, it seems. They have stared down the pesky greenhouse gas carbon dioxide and turned it to stone.

Bubbles in ancient Australian lava reveal that the early Earth's atmosphere might have been half as thick as it is today, scientists say.

The annual CO2 growth rate rose more in 2015 than scientists have ever seen in a single year.