As U.N. negotiations begin this week on a global mercury treaty, an MIT atmospheric scientist explains the challenges ahead.

The first United Nations negotiating session for a global, legally binding mercury treaty begins today in Stockholm. Continuing through Friday, this is the...

MIT’s Joint Program on the Science and Policy of Global Change has pegged the annual cost of the proposed cap-and-trade legislation in Congress at $400 per U.S. household. But estimating the cost of doing nothing is far more difficult.

Sergey...

Says policy-making requires ambitious short-term goals.

Long-term climate change policy in the United States and abroad is likely to change very slowly, warns an MIT professor who says the lack of future flexibility argues for stronger short-term goals to reduce carbon emissions....

Today's release of a widely anticipated international report on global warming coincides with a growing clamor within the United States to reduce greenhouse gas emissions and prevent the potentially devastating consequences of global climate change. "There's clear evidence that greenhouse gases...