Scientists are pretty certain climate change is going to cause the sea level to rise. It's happening already, actually. In communities around the Chesapeake Bay, people are getting a sneak preview.

"The United Nations on Tuesday raised the prospect of 'megadisasters' affecting millions of people in some of the world's biggest cities unless more is done to heed the threat of climate change."

"The Energy Department's scaled-back goal for capturing carbon at the proposed FutureGen coal-fired power project is getting poor reviews from environmentalists."

"Man-made climate change could bring parching droughts to the Southwest and pounding rainstorms to Washington, put Vermont maple sugar farms out of business and Key West underwater over the next century, according to a federal report released yesterday."

A new report says that climate change is already causing widespread human migration.

"The Obama administration's top climate change scientists will unveil a report on Tuesday that details the impact of global warming on the United States and argues for fast action against it."

"A dispute is heating up over the role of farms and forests in climate legislation."

"Federal officials are struggling to calculate the fiscal impact that climate change could have on the nation's troubled public flood insurance program, amid predictions of intensifying downpours and more potent hurricanes."

"The world's richest countries and those that are developing fastest need to lead the transition to an energy-efficient and low-carbon economy to stave off the worst effects of climate change, science academies from these nations said on Thursday."