In the past week, there have been more than 50 dead and dying dolphins found along the L.A. County coast. Experts say it's due to a neurotoxin called domoic acid.

San Francisco's healthiest neighborhoods offer walkable streets, abundant parks, farm-fresh food, and active communities. Explore 10 area where wellness defines ...

Discover overlooked San Francisco neighborhoods where you can still find homes under $1 million, complete with details on ...

Humankind faces unprecedented changes in climate patterns, sea-level, ocean acidity, ecosystems, and more. Learn more about the science behind these issues in the following FAQs.

Watching the fog slip away is like opening a package at Christmas time, except what is being revealed is nature in all its ...

Four dead whales have been found in the San Francisco Bay area in less than two weeks, with some experts expressing concern.

Opponents of President Donald Trump’s administration took to the streets of communities large and small across the United States on Saturday, decrying what they see as threats to the nation ...

The Main Trail, a gentle 1.5-mile loop, delivers the perfect blend of accessibility and awe-inspiring beauty that makes it an ...

Protests against President Donald Trump’s administration are once again taking place in communities across the U.S.

This is the fourth big wave of protests against US President Donald Trump across America since he took charge of the Oval ...

This is a photo collection curated by AP photo editors.