Flooded Golden Gate Bridge

A biblical megaflood could hit the US at any moment. And that’s only the beginning

A flood, the scale of which has not been seen in centuries, is coming, scientists say. Can we prepare before it hits?
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Hemp leaf on bright yellow background.

The unsettling truth about medical cannabis and mental health

Does it help with mental health, or is there something else at play?
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Narrow mountain road with Jeep blocking the way.

Top 10 most dangerous roads in the world 2026

Fasten your seatbelts and hang on for dear life
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Illustration of a person enjoying smelling their coffee

It’s time to rethink the pursuit of happiness

What if the pursuit of happiness in the traditional sense is the very thing stopping you from being happy?
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Issue 431 of BBC Science Focus is on sale 26 March 2026

New issue: What really causes autism?

Our best research – studies that looked at the health records of millions of children – has, to date, found no causal link between taking acetaminophen (otherwise known as paracetamol and sold under the brand name Tylenol in the US) during pregnancy and the onset of autism. In fact, as rates of autism diagnoses have gone up, acetaminophen use during pregnancy has actually gone down. So why do some high-profile US politicians suggest otherwise? Well, there was a study, published a decade ago, that looked at data collected on almost 2,650 children, which did find an effect. But it’s possible that this research was actually observing the effect of whatever symptom the drug was meant to treat – not the drug itself. The backdrop to this row is the undeniable observation that autism diagnoses are on the rise. One in 59 children were thought to have the condition in the US in 2015; that figure is now one in 31, according to the Centers for Disease Control and Prevention (CDC). Most experts attribute this rise to improvements in identifying autism. Indeed, we’ve gotten better at understanding what autism looks like in all its forms. And therein lies some clarity. Just as we’re beginning to understand that there are different types of autism, there are likely to be several factors that can shift the dance between genetics and the environment as your brain develops during pregnancy. Timing is everything in the womb, which is why one scientist is growing tiny human brains (or at least parts of them) in a lab – to find out when and where the first signs of autism appear.
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Yawning alarm clock.

How some people sleep only four hours a night and still feel great

A small group of humans barely rest at night – and never suffer for it. Science is about to find out why that matters for all of us
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The Artemis 2 rocket launches from a launch pad.

Artemis II: 21 historic images of the stunning Moon mission launch

It's the most significant moment in spaceflight of the 21st century so far
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NASA's Artemis 2 spaceship on launchpad with Moon in background.

22 mind-blowing facts about NASA’s Artemis II Moon mission

Taking one step closer to the next giant leap
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Close up strawberry exploding against blue sky.

Can you stop your sense of taste dulling as you age?

Is there any way of stopping your sense of taste from dulling as you age? A doctor explains the steps you can take
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