Articles by

Sid Perkins

Marsquakes reveal the Red Planet boasts a liquid core half its diameter

Mars has had its first CT scan, thanks to analyses of seismic waves picked up by NASA’s...

Newly recognized tricks help elephants suck up huge amounts of water

Whether or not it’s possible to teach an old elephant new tricks, a 34-year-old pachyderm at Zoo...

T. rex’s incredible biting force came from its stiff lower jaw

The fearsome Tyrannosaurus rex could generate tremendous bone-crushing bite forces thanks to a stiff lower jaw. That...

Climate change may have changed the direction of the North Pole’s drift

A sudden zag in which way the North Pole was drifting in the 1990s probably stemmed in...

Earth sweeps up 5,200 tons of extraterrestrial dust each year

As our planet orbits the sun, it swoops through clouds of extraterrestrial dust — and several thousand...

A meteor may have exploded over Antarctica 430,000 years ago

Seventeen tiny particles recovered from a flat-topped mountain in eastern Antarctica suggest that a space rock shattered...

Andromeda’s and the Milky Way’s black holes will collide. Here’s how it may play out

The supermassive black holes at the centers of the Milky Way and Andromeda galaxies are doomed to...