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A few weeks ago, PG&E cut power to more than 700,000 customers. At the time, politicians and pundits pointed to SDG&E, which shut off electricity to about 500 customers, as a better example of wildfire preparedness.

People struggling with insomnia often turn to apps to help them fall asleep. But scientists say only some apps use proven methods that can help address the underlying causes of sleeplessness.

Generals, admirals, former national security officials, and scientists have signed a letter to the president warning that climate change is a threat to national security.

Gustaf Arrhenius, a Scripps Institution of Oceanography researcher who helped shape the region’s scientific future, died Feb. 3.

The scientific research coming from places like UC San Diego could add to the wealth of knowledge spacefarers need to safely get to other planets.

Atlantic writer Ed Yong warned of a global pandemic two years ago. He says scientists are still working to understand how COVID-19 travels through air — and whether more of us should be wearing masks.

Researchers asked adults to reflect back on their happy childhood memories. They found those who recalled more were less likely to have depression in adulthood and had more supportive relationships.

The Mexican city of Culiacan lived under drug cartel terror for 12 hours as gang members forced the government to free a drug lord's son, but in many parts of Mexico, the government ceded the battle to the gangs long ago.

Hotter neighborhoods tend to be poorer in dozens of major U.S. cities. That extra heat can have serious health effects for those living there.

Labs are churning out more and more synthetic DNA for scientists who want to use it to reprogram cells. Some say the technology has outpaced government safety guidelines put in place a decade ago.