What happened to Mars's water? It is still trapped there

Billions of years ago, the Red Planet was far more blue; according to evidence still found on the surface, abundant water flowed across Mars and forming pools, lakes, and deep oceans. The question, then, is where did all ...

The mysterious Denisovans

Little is known of the mysterious Denisovans. These distant relatives of the Neanderthals roamed eastern and southern Eurasia but left little trace of their time on Earth.

It's a one-way street for sound waves in this new technology

Imagine being able to hear people whispering in the next room, while the raucous party in your own room is inaudible to the whisperers. Yale researchers have found a way to do just that—make sound flow in one direction—within ...

Guatemala volcano erupts but no evacuations yet

Guatemala's Fuego volcano began a strong eruptive phase on Thursday, spewing lava and ash in a series of explosions that have not yet forced any evacuations, authorities said.

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