Health & Science

Florida conservation officials say a female panther has crossed a river, and it could be a big deal for the survival of the species.

Florida panthers are endangered — about 200 of the large cats live in south Florida, in an area that's less than 5 percent of their original range. If the animal is to thrive, it needs to do two things: expand its territory and breed.

The Affordable Care Act's requirement that people have health insurance or pay a fine is one of the least popular provisions of the law, and one that Republicans have pledged to eliminate when they repeal and replace Obamacare.

But take a look at some of the replacement proposals that are floating around and it becomes clear that the "individual mandate," as it's called, could still exist, but in another guise.

Mantis shrimp, a group of aggressive, reef-dwelling crustaceans, take more than one first-place ribbon in the animal kingdom. Outwardly, they resemble their somewhat larger lobster cousins, but their colorful shells contain an impressive set of superpowers.

Since Donald Trump's election victory, Facebook CEO Mark Zuckerberg has come out not once, but twice, to address the issue of fake news, inaccurate or simply false information that appears on the Web in the guise of journalism.

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The devastation in floods, earthquakes or droughts is generally measured by how much stuff or assets people lose — say the number of wrecked houses and the dollar amount it would take to rebuild them. In the course of a year, that adds up to a lot of money: $300 billion by some accounts.

Donald Trump took direct shots at some of the biggest tech companies during the presidential campaign. When Apple wouldn't help the FBI unlock a phone used by a terrorist, he suggested boycotting the company.

The share of U.S. mothers who spank their young children or endorse physical discipline has declined significantly over the past two and a half decades, according to an analysis of four national surveys.

The findings, out Monday in the journal Pediatrics, came from an analysis of data from 1988 to 2011. Researcher found that 21 percent of median-income mothers of kindergarten-aged children endorsed physical discipline at the end of that period — down from 46 percent at the start.

An experimental vaginal ring that continuously releases the anti-HIV drug dapivirine has the potential to save lives.

But what's it going to do to sex lives?

For decades Freedom House has been ranking the world on free speech, political and civil rights. In recent years, this nongovernmental organization has extended its research into the state of the Internet. And for the sixth consecutive year, it has found Internet freedom on a decline.

Grapefruit's bitterness can make it hard to love. Indeed, people often smother it in sugar just to get it down. And yet Americans were once urged to sweeten it with salt.

Ad campaigns from the first and second world wars tried to convince us that "Grapefruit Tastes Sweeter With Salt!" as one 1946 ad for Morton's in Life magazine put it. The pairing, these ads swore, enhanced the flavor.

Some tiny clusters of brain cells grown in a lab dish are making big news at this week's Society for Neuroscience meeting in San Diego.

Known as "minibrains," these rudimentary networks of cells are small enough to fit on the head of a pin, but already are providing researchers with insights into everything from early brain development to Down syndrome, Alzheimer's and Zika.

A large study has produced reassuring evidence about a drug that millions of people use to alleviate pain from arthritis and other ailments.

The study found no evidence that the drug Celebrex, or generically, celecoxib, poses any greater risk for causing heart attacks and strokes than two other widely used pain relievers.

You can't choose your parents, so you can't help it if you're born with genes that increase your risk of heart disease. But a study finds that you can reduce that risk greatly with a healthful lifestyle.

Scientists have been wondering whether that's the case. To find out, one international consortium looked at data from four large studies that had isolated genetic risk factors for heart disease.

They identified genetic markers that seem to put people at nearly twice the risk for heart disease.

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