Environment

Angry birds: Hummingbirds are cute, but they’re primed to fight

Lethal heat in West Africa is driven by human-caused climate change

The recent deadly heat in West Africa is driven by human activities, including the burning of fossil fuels, particularly in the wealthy Northern Hemisphere, according to an international report.

Wildfire smoke contributes to thousands of deaths each year in the U.S.

Two new studies show the unseen toll smoke is taking on people across the country. Climate change is likely to make the problem even bigger.

Drought emergency declared for Washington state ahead of warm summer

A drought emergency was declared for the entire state of Washington Tuesday, as state officials face low water supply ahead of an expected warmer-than-normal summer.

A video shows two men toppling rock formations at Lake Mead trail

The National Park Service is seeking the public's help in identifying the two men, caught on video pushing rocks off a cliff near the Redstone Dunes Trail earlier this month.

Seattle passed a tree protection law last year. So why did a 'protected' cedar get the ax?

On Tuesday, a 60-foot cedar tree in West Seattle was cut down to make way for a six-home development project, despite being designated by the city as "protected" from home demolition. Local environmental advocates say the removal of the tree, which they called “Henry,” demonstrates that the city’s tree protection ordinance doesn’t extend far enough.