Archaeology
Ötzi the Iceman’s DNA reveals his looks and ancestry
A reanalysis of the ancient guy’s genes shows he was balding and had dark skin. He also had an unusual amount of early farmer ancestry.
Humans
More Stories in Humans
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PsychologySpending time in green spaces can provide big health benefits
Walking through a park or playing in a yard can make you feel better, both mentally and physically. Here’s how — and evidence it works for people at any age.
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ArchaeologyLet’s learn about Stonehenge
Questions remain about exactly who built Stonehenge and why. But some details are known about the site’s origins.
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TechA puff of air could deliver vaccines needle-free
A new Nerf gun-like device may make injections safer, faster and easier.
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PhysicsScientists Say: X-ray
X-rays are a type of light that doctors use to image the inside of the body. Astronomers use X-rays to explore the cosmos.
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TechCould Star Trek replicators exist?
Experts break down what’s possible and what’s not for this classic science-fiction invention.
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TechNanobots can now enter brain cells to spy on what they’re doing
Fleets of advanced versions may one day be able to detect disease and then go about surgically treating it — without ever opening the skull.
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TechThis electronic bandage sterilizes wounds with flashes of light
Dentists have sterilized medical equipment with ultraviolet-C light for years. Applying this tech to bandages had proven a challenge — until now.
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Health & MedicineHigh blood pressure can affect kids but often goes undiagnosed
Left untreated, it can lead to lasting problems, even in kids who appear otherwise healthy. Learn the signs and what to do.
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Health & MedicineExplainer: High blood pressure stresses the heart and blood vessels
Because it can be dangerous, doctors should regularly screen for it even in young kids and teens — but often don’t.