With the future of high-speed rail uncertain, Caltrans has quietly begun studying a similar, if more audacious idea: buses that zip from San Francisco to Los Angeles at 140 miles per hour.

He was an addict, trying to turn his life around. She was a counselor who said she wanted to help. Who was preying on whom?

A rambunctious sea otter commandeered a surfer’s board in Santa Cruz, raising concerns that a disturbing trend of marine mammals hassling surfers.

Cardiac doctors in San Francisco are increasingly seeing young people hospitalized with a deadly heart infection caused by injecting drugs.

Already one of the oldest parts of the U.S., the San Francisco metro area is aging faster than any other major region. It will change every aspect of our lives.

President Donald Trump has signed his budget bill, spelling the end of a major, long-standing tax credit that has boosted rooftop solar.

Does this new Bay Area ramen spot live up to its acclaimed restaurant in Los Angeles? It only took one bite to know the answer.

California and four other states are investigating the problem of wildfire survivors not having enough insurance to rebuild their homes after a Chronicle investigation exposed the depth of the...

A little-known and highly dangerous earth metal used to craft spaceships has been found in wildfire-ravaged homes and in the air in Los Angeles. Experts are shocked — and alarmed.

As a deadly squall swept over Lake Tahoe, some boaters raced to shore while others — including the Johnston family and their guests — fought for their lives.

Jázmin sought care in California's for-profit psychiatric hospitals. But rather than help, they subjected her to chaotic conditions.

San Francisco’s most prominent federal office buildings, including the Nancy Pelosi building, are on President Trump’s shortlist to be sold.

The Los Angeles fires are inspiring an unprecedented turnout of volunteer support for victims, providing everything from pet food to shovels to socks.

Mistaken message on tsunami danger was sent to thousands in Bay Area, highlighting region’s messy response to major event

Evaporating rain showers over San Francisco contributed to a stunning sunrise and rainbow Thursday morning, eventually resulting in light rain in the North Bay

“The equities favor the MWC’s interest in conducting and proceeding with the tournament as planned,” U.S. District Judge S. Kato Crews wrote Monday.

This cross-sectional study examines rates of police pursuit fatalities in the US from 2017 to 2021.

Data Reporting Intern, Summer 2025 The San Francisco Chronicle is looking for a summer intern to join our Data team, which develops on quick-turn, graphics-focused stories, interactive projects and da...