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.

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.

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

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.

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

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 rural and "distressed" hospitals and some others.

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

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.

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.

Recent research suggests that the disease can diminish intelligence even years after symptoms resolve. It's one more reason to get the latest vaccinations.

NASA probe launches aboard SpaceX rocket to search for the building blocks of life on Europa, Jupiter's icy ocean moon.

Meat producer BrucePac is recalling nearly 10 million pounds of meat and poultry products sold at Trader Joe's, Target, Kroger and other retailers because they might be contaminated with listeria.

It's hard to beat the convenience of baby food pouches. But overreliance can affect a child's nutrition, food preferences and speech development, experts warn.

The politics of reproductive health aren't just about abortion and aren't limited to younger women.

Although California dairy farmers had heard about the H5N1 bird flu before it hit, none was prepared for the devastation it would cause in some herds.

Every year, Medicare officials encourage beneficiaries to shop around for their drug coverage. Few take the time. This year, it might be more important than ever.

Just months after the Supreme Court limited abortion access, infant mortality rates rose significantly higher, according to a new study.

Berkeley chemists have created a reusable material that pulls carbon dioxide from the air and holds onto it until it can be stored.

The safety of mass-produced food has improved dramatically in recent decades, but listeria, a common type of bacterium, presents unique hurdles.

Here are the key takeways from The Times' yearlong investigation into the science behind magnetic resonance therapy, or MERT, as a therapy for autism.

In under-resourced parts of Los Angeles, people develop life-altering, preventable diabetes complications related to obesity. These patients rarely live to grow old.

Maternal health organizations and advocates are urging the California surgeon general to suspend the rollout of a plan aimed at reducing maternal mortality.

Starlink satellites burn up in Earth's atmosphere after five years. Some researchers worry this injection of metals in the upper atmosphere could be damaging.

H5N1 bird flu has been discovered in a pig in Oregon, a development that has sparked new concerns among infectious disease experts.

Few drugs are available to treat heavy metals that enter the body, either from lead poisoning or nuclear fallout. A UC Berkeley startup hopes to change that.

Public health officials maintain the risk of H5N1 bird flu infection remains low. They are searching for the source.

A resident of a nursing home in Thousand Oaks was arrested after his roommate was found dead early Friday morning, the Ventura County Sheriff's Office said.

Two Los Angeles Police Department officers were injured early Sunday morning in South L.A. when their vehicle overturned after being struck by a car.

Robert F. Kennedy Jr. described fluoride, which occurs naturally in all fresh water supplies, as an 'industrial waste' associated with various health risks.

As demand for popular weight-loss drugs like Wegovy and Zepbound skyrockets, patients are taking dosage amounts into their own hands.

The deaths of people such as Kurt Cobain, Amy Winehouse and Jim Morrison fuel the myth that musicians face an increased risk of death at age 27.

From family planning to hospital bills, the new Trump administration has the potential to affect a wide range of policies in the Golden State and beyond.

Gas prices could rise after vote by California regulators

Diagnosing 'Stage One Alzheimer's Disease' based solely on biomarkers is potentially dangerous to patients.

USC professor Berislav Zlokovic is on leave after whistleblowers cast doubt on his published work and derailed trials for an experimental stroke treatment.

Strength training has many benefits for health and longevity. Now many older Angelenos are seeking out a method called slow motion strength training to protect their joints and heal injuries.

The La Cañada Flintridge research institution will let go of approximately 325 employees across the organization, about 5% of its total staff.

Campus police are scanning hundreds of images and using facial-recognition technology to identify the attackers. Similar tools were used to identify Jan. 6 attackers.

Randy Travis has released a new song, "Where That Came From," with the help of artificial intelligence. It's his first single since he had a stroke.

A group of protesters blocked the entrance of Google's developer conference in Mountain View, Calif. The demonstrators have condemned the tech giant's cloud computing contract with Israel's government.

TikTok creators sued the U.S. government on Tuesday, alleging a new law that could ban the app violates their free speech rights under the 1st Amendment. The legislation is meant to force Chinese owner ByteDance to sell the service.

YouTube said more people are watching live events like Coachella and short form videos on TV sets. Sports, including the NFL, are also boosting viewership.

Sony Music Group is sending more than 700 letters to tech companies and music streaming services, calling on them to not use its music to train AI without authorization from the label.

Knee-jerk regulations of AI and privacy issues could end up serving the biggest companies and hurting consumers by stifling future competition.

Johansson, who portrayed the voice of a computer program in 'Her,' was not behind OpenAI's 'Sky' voice assistant. Another actor provided the voice, OpenAI said.

TikTok plans to lay off employees this week, according to a report in the Information. The job cuts come as other companies have recently cut staff, including Apple and Google in California.

The Commodity Futures Trading Commission denied financial services firm Kalshi's bid to allow betting on control of Congress. Now the company is suing to overturn the decision.

The company said it formed a safety and security committee, which is expected to make recommendations within 90 days. The move comes after a number of controversies, including a dustup with actor Scarlett Johansson.

About a third of adults under 30 get their news from short, punchy videos on TikTok, and that's a big challenge for the Biden campaign.

As Netflix continues to invest more in games, it is expanding its titles based on its popular reality shows including 'Too Hot to Handle' and 'Selling Sunset.'