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A mysterious disease is killing off the West Coast's enormous sunflower sea star, so researchers have launched an ambitious effort to breed this species in captivity.

Independence Day fireworks can be dangerous and terrifying for our pets. Here's how animal experts advise keeping your furry friends safe this weekend.

Independence Day fireworks can be dangerous and terrifying for our pets. Here's how animal experts advise keeping your furry friends safe this weekend.

The program aims to rectify a decades old problem: clinical trials do not include diverse patients. But, some genetics experts say, the All of Us program may not really be for all of us.

Space is the best place — maybe the only place — to get a complete picture of how climate change is affecting the Earth's oceans. And what happens in the ocean does not stay in the ocean.

California mussels are changing as the ocean becomes more acidic and scientists worry that may hurt them.

California public health officials say they will let local school districts decide how to enforce new mask rules. California is still requiring all students and staff to wear masks while indoors at school even if they are fully vaccinated.

New guidance that fully vaccinated people don't have to wear masks made a visible change at the White House this week.

The San Diego City Council is calling for data-driven policy changes and more community conversations in response to the latest report detailing racial disparities in San Diego policing.

No clinical trials of COVID-19 vaccines were done on pregnant or breastfeeding women — standard practice for any new drug or vaccine. But some doctors and medical experts now say this was a mistake.