Two dermatologists at the University of California, San Francisco conducted the experiments on men at a prison hospital decades ago.
The 6.4 magnitude quake strikes the north of the state, however, there is no warning of a tsunami.
Plan to equip American police in the city with armed robots is sent back to the drawing board after city council members say they were having second thoughts.
The move follows an emotionally charged debate that reflected divisions on the politically liberal board over support for law enforcement.
Musk changes his Twitter profile to "Chief Twit" and posts video of himself walking into the social network's California headquarters carrying a sink, days before his $44 billion takeover of the firm must be finalised.
The world's richest man had sent a letter to the social media platform vowing to honour the original buyout price of $54.20 a share, prompting a surge in the stock price.
It was the latest achievement by the Japanese octogenarian, who in 1962 voyaged from Japan to San Francisco at age 23, becoming the first person in the world to sail alone across the Pacific.
Hate crimes against Asian American and Pacific Islander communities in the cultural and commercial hub of San Francisco show an astonishing 567 percent rise in 2021, police say.
Powerful storm barrels toward southern California after flooding highways, toppling trees, and causing mudslides in areas burned bare by recent fires across the northern part of the US state.
Thousands of Americans protest in major US cities in response to a surge of deadly violence against Asian Americans.
The victim was a developmentally disabled woman Stubblefield had contacted through a nanny website.
"We don't have those critical burning conditions that we were experiencing those last two nights," he said of Glass Fire raging through Napa and Sonoma counties in western US.
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