Emissions

Fuel economy hasn't improved in 100 years

Watch out! Urban grime is going airborne

What is the U.S. Clean Power Plan?

The Pliocene called. It wants its CO2 levels back.

Chicago Auto Show: Where the wild green cars are

U.S. and China reach historic deal on climate change

Humans need to ditch fossil fuels by 2100, IPCC warns

How much are plants helping us fight climate change?

Global carbon dioxide emissions reach new high

Leaked U.N. report warns of 'irreversible' warming

5 things to know about the EPA's new CO2 proposal

EPA's climate change proposal focuses on emissions from power plants

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