Laser-produced plasmas have been used to create short bursts of x-rays and to accelerate particles — so-called plasma-based accelerators.

San Francisco transportation officials released their first report on traffic patterns in the outer Sunset since the controversial closure of the Upper Great Highway. Mark Vientos laced a two-run ...

Heat and humidity continue through Wednesday, along with scattered storm chances.

Storm Center 7’s Live Doppler 7 Radar has the latest conditions in your neighborhood to help you plan, prepare, and act when severe weather arrives.