San Francisco

The San Francisco Bay Area is by far the largest climate tech hub

Greek startup Augmenta has received a cash boost of 2.5 million euros from San Francisco-based Hardware Club and Marathon Venture Capital, thanks to its smart, robotic Field Analyzer system, seen here on top of a tractor, which offers farmers significant cost savings.

Hundreds of homes are endangered, and piles of thick smoke rises near San Francisco. According to the local fire department, about 29,000 hectares of oak forests, shrubs and grass are affected.

Firefighters are struggling with high temperatures, low humidity and winds.

TheVerge - At least four people were shot at YouTube's headquarters in San Bruno on Tuesday, according to a police spokesman. Three victims were taken to local hospitals. A fourth person died at the scene, apparently of a self-inflicted gunshot wound, police said during a press conference Tuesday afternoon.

Cliff House has had five major incarnations since its beginnings in 1858. That year, Samuel Brannan, a prosperous ex-Mormon elder from Maine, bought for $1,500 the lumber salvaged from a ship that foundered on the basalt cliffs below. With this material he built the first Cliff House.

The San Francisco Museum of Modern Art reopens in mid-May after an ambitious $305 million expansion and facelift that aims to rival the world-class art spaces of New York, Paris or London.