ScienceScience

The monarch butterfly is widely recognized and widely dispersed across North America and it's in trouble. Federal officials decide soon whether it gets protection under the Endangered Species Act.

If you live in California, you've likely heard the term 'atmospheric river' thrown around recently. Atmospheric rivers produce up to 50% of California's precipitation annually – and the first one of the season is hitting Northern California this week.

The Bay Area’s last remaining elephant is gone. He joins an old friend at The Elephant Sanctuary in Tennessee. Elephant caretakers are increasingly recognizing these intelligent animals’ social needs.

Lacewings have babies that are prized as pest control. But before they can mate, they have to vibrate their bodies and sing to each other, making noises like purring cats or growling stomachs.

Research has generally shown that drinking fluoridated water at the recommended levels is safe and beneficial for oral health, especially in children. However, many people feel that more research is needed to better understand whether and when health risks kick in.

Some community members and elected officials are dreaming of what a park along San Francisco’s western edge could become.

As President-elect Donald Trump tapped former Rep. Lee Zeldin, environmental leaders say they have been planning for months on how to push back against swift environmental deregulation.