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Recent Headlines
A UC Davis professor’s simple mission: Record and identify every butterfly he sees. What he’s discovered has disturbed him.
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A California company has come under fire for its aborted plan to recruit inmates to test a novel program to battle opioid addiction.
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Nearly 1,500 species have been protected by the U.S. Endangered Species Act, and only 11 have gone extinct. When laws are enforced, species can be saved.
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Documents reviewed by The Times reveal that the chemical formula that makes Juul so palatable and addictive dates back more than four decades — to Reynolds’ tobacco laboratories.
Novel drugs — some old, some new — may offer fresh ways to reduce heart risks beyond the usual medicines to lower cholesterol and blood pressure.
Sierra Nevada forests are vital for California’s water supply and wildlife, but are under siege from drought, beetles and climate change. Can scientists use drought-surviving trees to build more resilient forests?
New satellite measurements of NOx air pollutants above major North American cities show that Los Angeles had the highest emissions but also the steepest declines.
State policies that treat pregnant women like criminals if they use illicit substances are linked with higher rates of babies being born with opioid withdrawal.
Health
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Deaths resulting from infections with drug-resistant “superbugs” appear to be falling in the U.S., though infections continue to rise, according to the CDC.
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After controversial guidelines were introduced, cholesterol levels are inching down and more Americans are taking much-needed statin drugs.
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New advice from pediatric experts says there isn’t enough solid research to answer some of the most burning questions about kids, sports and concussions.
Most Read
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A California company has come under fire for its aborted plan to recruit inmates to test a novel program to battle opioid addiction.
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About 1 in 1,000 black men and boys in America can expect to die at the hands of police. That risk is 2.5 times higher than for white men, new research shows.
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Novel drugs — some old, some new — may offer fresh ways to reduce heart risks beyond the usual medicines to lower cholesterol and blood pressure.
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Back in 1989, Californians received a sobering warning: The accumulation of heat-trapping gases in the atmosphere would likely bring more droughts, floods, fires, and heat waves to the state.
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As this drought-stricken body of salt water recedes, the repercussions mount: Its exposed alkaline flats are giving rise to dust storms.
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The company has been charging California ratepayers for some contributions to pro-natural gas advocacy groups.
Sending mixed signals, California said it will sue to block Trump rollback of endangered species protections but also proposed delta water operations that partially echo Trump plans.
California pushes back against automakers that side with the Trump administration, which wants to strip the state’s authority to regulate emissions.
Succulents are hot. So this time of year, we’re putting them on pumpkins: Here’s a step-by-step guide to making a succulent pumpkin arrangement for your Thanksgiving table.
Mayor Eric Garcetti has worked to portray himself as a global leader in the fight against climate change.
Gov. Gavin Newsom wants an independent scientific review of all new proposals for hydraulic fracturing by California’s oil industry.
Transportation is responsible for 29% of U.S. greenhouse gas emissions. Drones delivering packages could help reduce that — depending on how and where they’re deployed.
The vulnerability of Venice has been cast in the spotlight by massive flooding in recent days.
It’s been a little over a year since the Woolsey fire began its assault on the Santa Monica Mountains, so survivors of that devastation can talk pretty calmly about what they and their neighbors experienced.
Medicine
Children are growing up in a warmer world that will hit them with more and different health problems than their parents experienced, doctors say.
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Doctors are reporting success in a penis transplant for a veteran injured by an IED. The man received a new penis, scrotum and lower abdominal wall.
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The first attempt in the U.S. to use CRISPR against cancer seems safe in three patients who have had it so far, but it’s too soon to know whether it will help.
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State Sen. Richard Pan, who is an author of SB 277, said that though the law has not been bulletproof, the study understates its success at boosting vaccination rates.
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It’s an article of faith for many parents who refuse to vaccinate their children: When healthy kids get and recover from an infection naturally, their immune systems come out stronger.
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More kids who are obese should be considered candidates for weight-loss surgery, according to new guidelines from the American Academy of Pediatrics.
More headlines
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Unprecedented visualizations have allowed scientists to dig deeper into the details of major earthquakes.
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The most damaging hurricanes, by area of total devastation, are increasing the most, according to a study of 247 hurricanes that hit the U.S. since 1900.
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Mini Mercury is skipping across the vast, glaring face of the sun in a rare celestial transit.
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The solar system’s smallest, innermost planet will resemble a tiny black dot as it passes directly between Earth and the sun.
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Officials are looking at vitamin E acetate as a potential cause of severe lung injuries that have sickened thousands who have used vaping devices.
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Montana justices face decision after the discovery of two fossilized dinosaur skeletons intertwined in what looks like a death match.
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For much of the United States, invasive grass species are making wildfires more frequent, especially in fire-prone California, a new study finds.
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Cerutti made one of the most contentious discoveries in North American archaeology when he found in a highway project the tusk of a mastodon.
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Scientists and world leaders increasingly recognize the need to bolster indigenous rights not only on humanitarian grounds, but for the good of the global environment.
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How close can U.S. cities, states and companies get to meeting the country’s abandoned climate goals without help from the federal government?
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Researchers found that asking trick-or-treaters in costume whether they were dressed up as a “good guy” or a “bad guy” influenced their propensity to lie.
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