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Elon Musk says he’s so exhausted that friends are ‘really concerned’ — here’s how much sleep you really need to stay hea...

You could be one of those incredibly rare people that can actually get by on a few hours of sleep a night or you could be on the opposite end of the spectrum.

Animals that defy the rules of aging — like naked mole rats — could help scientists unravel the secrets to longevity

Naked mole rats and turtles are anomalies when it comes to aging. Scientists are studying them to figure out why these critters live so much longer than other similar animals.

Scientists think they have found the reason some people are left-handed — and it has nothing to do with the brain

The answer to why some people are left handed could lie in your spinal cord, according to some research.

People who sleep for longer than 8 hours could have a greater risk of dying early — but that doesn’t mean you should never sleep in

A new study has shown too much sleep might increase your risk of heart disease and early death. But it doesn't mention circadian rhythms, which are closely intertwined with our sleep cycles. To make the most of your sleep, the advice remains the same: consistency is key.
A Soviet-era nerve agent called Novichok was likely used in the March 2018 attack of a former Russian spy and his daughter.

Novichok is a ‘dangerous and sophisticated’ Soviet-era nerve agent — here’s how it works and why it’s so lethal

Novichok, a rare and highly toxic Soviet-era nerve agent, was used to attack former Russian spy Sergei Skripal and his daughter Yulia, UK authorities say.

The primatologist who helped popularize the term ‘alpha male’ says we’re using it all wrong

The primatologist who helped popularize the term "alpha male" in the 1980s argues that we misuse the term, and he says the best leaders, in both chimpanzee and human social circles, are intimidating but generous.
"I love sharing my spit with you."

We share 80 million bacteria when we kiss each other — here’s why we enjoy it anyway

Kissing is great, because our lips are packed full of receptor cells, and it might be able to help us out with finding the right parter. But it's also disgusting.

A blockbuster gene-editing tool has been linked to cancer — here’s how worried you should be

Headlines linking blockbuster gene-editing tool CRISPR to cancer sent stocks in companies trying to bring the technology to medicine tumbling. But scientists who study the technique say the concerns are overblown at best, and an incorrect interpretation of the science at worst.

We stop discovering new music at age 30, a new survey suggests — here are the scientific reasons why this could be

A survey from music streaming service Deezer suggests we stop listening to new music at the age of 30 years and 6 months — a time when we are likely to be feeling overwhelmed by musical choice, and busy with work and children.

Narcissists have thicker, denser, more distinct eyebrows, according to a new study

If you have trouble recognising the signs of a narcissist, the answers could lie on their face — specifically in how thick and distinctive their eyebrows are, according to a new study.