This alarming trend, which began before COVID, fuels a deadly cycle of a sick workforce and weakened economy.

NASA's administrator says the agency is committed to the mission to bring samples of Mars back to Earth -- but in less time and for less money. How it will pull that off remains to be seen.

Ozempic and other drugs raised the possibility of reversing the country's obesity crisis. Doctors are frustrated that they've made health disparities worse.

It's very helpful, Robin Clough said, when, in the midst of a life-threatening medical crisis, the person you live with is a doctor who makes house calls.

The pup could become Aquarium of the Pacific's first surrogate-raised otter to return to the wild a if she masters the skills needed to hack it in the ocean.

Months after Kaiser Permanente reached a sweeping agreement with state regulators to improve its mental health services, the healthcare giant is facing union allegations that patients could be improperly losing such care.

Environmental and community groups want the state to turn down Phibro-Tech for a renewed permit for its Santa Fe Springs facility.

Millions of people across the U.S. will look up at the sky to witness a rare total solar eclipse. California won't experience totality, but there's still plenty to see.

'If I could sound better, I would,' says the presidential candidate, who has spasmodic dysphonia, a neurological condition that affects his vocal cords.

Awe is a serious topic among psychologists, including one at UC Irvine investigating whether awe-inspiring solar eclipses can help unite Americans.

'There are so many things wrong with this app that I don't even know where to begin,' one doctor said about Calmara, which says it can identify sexually transmitted infections from photos of penises.

Why would someone journey across the country to watch a total eclipse? Because it's more than just an astronomical rarity: It may be the best show in the universe.

Poppies across Southern California aren't popping, even as other bright flowers blanket the region. Here's why a and how you can marvel at a different wildflower this year.

Though there won't be totality in California, the state will still enjoy an impressive partial eclipse in the late morning a if the skies remain cloud-free.

Approving two proposed killer whale species could transform how they're conserved. It would also turn a new page in one of the strangest chapters in marine mammal history.

The high court is weighing a case that could rewrite the rules of care in more than two-thirds of U.S. abortions, limiting access to a popular drug even in states where it remains legal.

The question before the justices is who should decide what medicines are safe and effective: courts or the FDA?

Mifepristone has been used more than 5 million times in the U.S. since its FDA approval in 2000. The Supreme Court will weigh a challenge to expanding its access.

As the Supreme Court weighs limiting access to mifepristone, here are some of the numbers on abortion pill usage in the U.S. and California.

The number of tuberculosis cases in 2023 rose by 15% in California compared to the previous year. That's the highest year-over-year increase in 35 years.

Could JPL's ambitious Mars Sample Return mission use the long-troubled, massively over budget, but ultimately successful James Webb Space Telescope as a guide?

The video announcement by Catherine, Princess of Wales, about her cancer diagnosis was short on specifics. Here's a look at what we know.

Using machines that measure brain activity, scientists were able to show that dogs understand that words refer to some of their favorite objects.

A power outage that forced patients to be evacuated at a Boyle Heights hospital after the massive storm Hilary was the result of lapses in maintaining the facility, state investigators found.

When conventional farms are bordered by organic crops, conventional growers use more pesticide to keep insects at bay, study says.

Richard Ebright and Bryce Nickels of Rutgers have labeled leading virologists fraudsters, perjurers, felons and murderers. Is this how scientific debate is supposed to be conducted?

Giving clean syringes to people who inject drugs has been found to curb the spread of disease. But syringe programs are being banned in many California communities. The state is fighting back.

Marin County and other areas with too-low vaccination rates have shown that vaccine skepticism can be reversed.

SpaceX's giant Starship rocket, intended to take humans back to the moon and eventually to Mars, blasts off successfully from a Texas launchpad.