President Obama is expected to announce on Monday an Environmental Protection Agency regulation to cut carbon pollution from the nation’s fleet of 600 coal-fired power plants, in a speech that gove

Public health authorities are worried about a confluence of events set to happen soon: Brazil is suffering the world’s worst epidemic of dengue fever, with 1.4 million cases last year.

An Obama administration program set up to reduce chronic hunger and poverty has contributed to rising incomes for farmers around the world and has helped save millions of people from starvation, ac

Portraying California as the front line of climate change, Gov.

The accelerating rate of climate change poses a severe risk to national security and acts as a catalyst for global political conflict, a report published Tuesday by a leading government-funded mili

Toyota said on Monday that it would allow a battery-supply deal with Tesla Motors to expire this year and would focus instead on building cars running on hydrogen fuel cells, a next-generation tech

A large section of the mighty West Antarctica ice sheet has begun falling apart and its continued melting now appears to be unstoppable, two groups of scientists reported on Monday.

A bipartisan bill to encourage energy efficiency in buildings died in the Senate on Monday, derailed by the contentious debate over the Keystone XL pipeline and President Obama’s plans to issue new

A huge demonstration against a planned waste incinerator in one of eastern China’s biggest cities turned violent on Saturday with protesters overturning and setting fire to police cars, leaving at

During the harvest season, when exhausted workers spend seven days a week cutting sugar cane, the signs of illness were hard to spot at first.