Matthew Kupfer

Senior Investigations Reporter

Social media posts include antisemitic propaganda and appear to show the suspect in a German World War II-era uniform.

The Yosemite community has been reeling since Shannon "SJ" Joslin’s firing.

President Joe Biden’s order will require leading AI developers to share safety test results and other information with the government.

It’s the start of Silicon Valley’s four-year residency in Washington. Here’s a look at the main players. 


Just one month before the Holocaust victim’s lost art turned up on a park bench, a painting was sold in a San Francisco Goodwill. 