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A severe geomagnetic storm could disrupt communications and bring northern lights to parts of California, according to a warning from the National Oceanic and Atmospheric Administration.

NASA JPL's Europa Clipper spacecraft, the largest planetary probe ever built, will launch as early as Friday to explore Jupiter's icy ocean moon.

California legislators for years have granted extensions on a 1994 law requiring hospitals to retrofit their buildings to withstand earthquakes. Gov. Gavin Newsom in September vetoed an extension for all hospitals but signed a bill granting relief to ...

People hospitalized for COVID-19 early in the pandemic suffered an increased risk of heart attacks, strokes and other serious "cardiac events," researchers say.

Thirty-five women are suing a Beverly Hills obstetrician-gynecologist, Cedars-Sinai Medical Center and other medical practices, alleging decades of misconduct.

John Hopfield dreamed up the modern neural network while at Caltech. Geoffrey Hinton built on it, creating an AI firm that Google bought for $44 million.

An experimental program seeks to protect California almond trees from a pesky moth by using X-rays to sterilize the insects.

Although California dairy farmers anticipated a bird flu mortality rate of less than 2%, some say between 10% and 15% of infected cattle are dying.

The CDC plans to knock on the doors of randomly selected homes in the Tijuana River Valley later this month to ask them about how the sewage crisis has affected their wellbeing.

Research suggests that the patients of female physicians' fare better on average. But old-fashioned sexism is still a barrier to their success in the profession.