Clean Air Policy

Only candidates trailing in the polls mentioned global warming

New materials make prototype lithium–air batteries more durable

As Obama meets with Indonesia’s president, action on forests to combat climate change

Legal challenges expected from states as plan to combat climate change becomes official

The environmental activist group is negotiating to potentially purchase a coal mine in Europe

Despite pollution, India hopes to grow economically by burning more coal

Carbon intensity fell 2.7 percent last year but a decline of 6.3 percent a year needed for climate goal

The economic boom in Turkey has posed challenges for the environment

Diesel engines have yet to prove a viable alternative for passenger cars in the U.S., thanks to pollution

The South American country is relying on solar to forge a more competitive economy

Rich and poor countries now share responsibility for keeping global temperatures at a safe level

Because China relies on coal for much of its power, goods produced there can have a dirtier carbon footprint than those produced elsewhere. Christopher Intagliata reports