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Curved teeth could grip fragile shoulder tendons without tearing, making rotator-cuff repairs stronger and more likely to last.

Did builders of Egypt’s first pyramid use a water-powered elevator?

A controversial study suggests that ancient people might have used one to hoist the stones used to assemble into King Djoser’s pyramid.

Here’s why some shooting stars have long-lasting afterglows

Atmospheric chemistry is the most important factor in determining which meteors leave behind these persistent trails.

Summer ‘space hurricanes’ are emerging high above Earth’s magnetic poles

A separation — and later recombining — of Earth’s magnetic field lines may be what churns up these super-high-altitude storms of plasma.

Stashing more CO₂ in the ocean could slow climate change

More research is needed on ways to safely remove some CO2 from the water to make room for more — such as by seaweed farming and iron fertilization.

Peripheral vision and what we can see in the dark

The differences between the rods and cones in our eyes explain why objects seem to vanish in the dark when we look at them.

Analyze This: Human brains can last thousands of years

Ancient brains may not be rare finds. An analysis of over 4,000 preserved human brains reveals five processes that protect against decay.

Scientists Say: Cosmic rays

The last woolly mammoths offer new clues to why this species died out

The last woolly mammoth herd experienced a drop in genetic variation. But this is likely not what doomed these majestic beasts to extinction, new data suggest.

Metal gives the teeth of Komodo dragons their super strength

Investigating Komodo dragons' ironclad teeth in greater detail could also help solve a dental mystery in dinosaurs.

Here are 5 exoplanet mysteries the James Webb telescope could help solve

This space telescope could reveal much about the formation, makeup and evolution of distant exoplanets.

Many flowers and ferns lure in ants as bodyguards

With an offer of a nectar meal, ferns and flowering plants have been bribing ants to fend off predatory insects — since before the rise of T. rex.

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