Chinese maglev hyperloop train hits 387 mph and could someday outpace a plane.

Underwater volcano eruption 7,300 years ago is the largest in recorded history

Study suggests a 'dark mirror' universe within ours where atoms failed to form

Brightest black hole ever discovered devours a sun's-worth of matter every day

'Quantum memory breakthrough' may lead to a quantum internet

Marker for the collapse of key Atlantic current discovered

'City killer' asteroid makes its closest approach to Earth for centuries today

Poisoned AI went rogue during training and couldn't be taught to behave again in 'legitimately scary' study

Lasers reveal ancient settlements hidden deep in the Amazon rainforest

Scientists discover near-Earth asteroid hours before it exploded over Berlin