CO2

What is the U.S. Clean Power Plan?

3 reasons not to expect a 'mini ice age' in 2030

Exxon knew climate risks in 1981, email suggests

The Pliocene called. It wants its CO2 levels back.

Fjords hoard more carbon than we thought

Michael Bloomberg gifts Sierra Club $30M to fund anti-coal efforts

Greenhouse effect is observed and getting worse

Did ocean's big CO2 burps end last ice age?

What is carbon insetting?

Could carbon farming save our soils?

NASA unveils satellite's 1st CO2 map of Earth

Earth's oceans hit warmest temperatures ever recorded

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