Once rarely sighted, gray foxes are being seen by more East Bay residents, and there’s nothing to be alarmed over.

In the face of climate change and sea-level rise, regulators are rethinking long-held attitudes toward bay fill.

When the death of the last living specimen was reported, its passing became a cause celebre on social media.

My story of getting and coping with late-stage Lyme disease—one of the fastest spreading, most debilitating, and least understood diseases in the nation.

The Golden Gate Audubon Society’s video cameras are focused directly on an osprey nest atop the Whirley Crane in Richmond, and the response has been overwhelming.

A recent study suggests that artificial lighting makes it harder for birds — and perhaps humans — to fight off West Nile Virus.

Environmentalists say Bay Area regulators are continuing to drag their feet on dealing with air pollution from refineries. And residents in vulnerable communities are paying the price.

The popular dog park was once nicknamed Battery Park. The East Bay Regional Park District is looking into why.

A Dutch company has set up operations at Alameda Point, where it hopes to launch an ambitious invention that will clean up plastic from the world’s oceans.

The city finally added the widely adopted phone number for municipal complaints. But with rampant illegal dumping, Oakland’s complaint-driven approach has been criticized.