Why are so many people walking across San Francisco? Thank Bob Siegel, a tireless 86-year-old who built the city’s ultimate walk.

OPINION: The most intriguing thing about the race between Scott Wiener and Connie Chan to fill Nancy Pelosi’s House seat is that it has become a race at all, the editorial board writes.

Thermal energy networks are an under-the-radar technology that’s capable of powering entire neighborhoods. They present an unusual opportunity for communities to have a shot at owning the infrastructu...

ALT: Phil Hartman: Colon Blow Cereal Pyramid

The vehicles on American roads have grown larger — and they are killing thousands more pedestrians, a Times investigation found.

Basic economic principles point to the solution for the housing affordability crisis.

A lifesaving injection given at birth to prevent severe bleeding has become collateral damage of the anti-vaccine movement.

Found photos from the 1910s highlight long-lost corners of the Bay Area with an unexpected surprise: lightness and laughter.

The Republican Party may have an insurmountable lead among young voters who dress and act like they’re already 50 years old.

How did Oakland’s favorite movie theater survive for a century? The answer includes Ryan Coogler, real butter and a theater operator who fell in love with a money pit.

Residents blame the developer that promised the stairway that would connect Dogpatch and Potrero Hill neighborhoods. But the developer says the city’s permitting woes are the culprit.