New recommendations from the U.S. Preventive Services Task Force say breast cancer screening should begin at 40 and continue every other year through age 74.

T. rex intelligence was likely much closer to that of modern-day crocodiles than primates a a perfectly respectable amount of smarts for a therapod.

As climate change intensifies hurricanes, some scientists want a Category 6 for the biggest storms

Washington acknowledged the need for an 'all-sky' view of deep space but may stint on the funding. Does this make sense?

Vector control officials in Southern California are starting to release sterilized male mosquitoes to combat the summertime onslaught of ankle biters.

The spacecraft launched in 1977 and is now 15 billion miles from Earth. It went silent in November. Scientists at JPL figured out how to get it talking again.

A Los Angeles County initiative called Reaching the 95% aims to engage with more people than the fraction of Angelenos already getting addiction treatment.

The Food and Drug Administration on Monday approved Culver City-based ImmunityBio's treatment for bladder cancer.

Taylor Swift's new 'The Tortured Poets Department' album draws inspiration from her own breakups. What attracts us to songs about failed relationships?

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.