President Donald Trump on Thursday revoked a landmark scientific finding underpinning US regulations to curb planet-warming pollution, marking his biggest rollback of climate policy to date.The

The 2009 endangerment finding affirms that carbon dioxide and other greenhouse gases pose a threat to human health and welfare. Its repeal marks one of the most significant deregulatory actions in U.S.

By Valerie Volcovici and David Shepardson WASHINGTON, Feb 12 (Reuters) - The administration of President Donald Trump on Thursday announced the repeal of a scientific finding that greenhouse gas emissions endanger human health,

A small group of conservative activists has worked for 16 years to stop all government efforts to fight climate change. Their efforts seem poised to pay off.

The move marks the culmination of a decade-long push by the president to tear up climate policies he argues stifle industry.

While most of the world's glaciers are retreating as the climate warms, a small but significant population behaves very differently—and the consequences can be severe. A team of international scientists,