This Image Is Why Everyone's So Excited About A NASA Mission To Europa

NASA wants to visit Jupiter's moon Europa. Why's that exciting? In a word: Water. As this visualization shows, the icy moon may look tiny next to our own planet, but it's got 2- to 3-times as much H2O as we have here on Earth. That "little" moon is packing quite the store of water — and with it, scientists think, a… »4/08/15 3:00pm4/08/15 3:00pm


Archaeologists Find Royal Entryway To King Herod's Hilltop Palace

King Herod's most ambitious project was Herodium, a fortified palace on top of a hill in the Judean desert. Honeycombed with passages and chambers, it also became his mausoleum. Now, archaeologists have found a resplendent, 65-foot corridor to provide the royal entourage direct entry into the palace courtyard. »12/19/14 11:20am12/19/14 11:20am

NASA Celebrates Anniversary Of Earth Observing System With Amazing GIFs

In December 1999, NASA launched the Terra satellite to collect climate data. It would be the first spacecraft in a fleet of 18 Earth-observing satellites that, over the last 15 years, have opened up a new era of exploration of our home planet. To celebrate, the space agency has compiled some of its most stunning gifs. »12/19/14 9:40am12/19/14 9:40am

Why The Discovery Channel's "Eaten Alive" Stunt Could Kill An Ananconda

We don't know if the Discovery Channel's upcoming Eaten Alive special will truly show an adult man being swallowed by an anaconda. But regardless of whether it's real or fake, you should steer clear of this special, because if an anaconda did try to swallow a human, it would injure—and could even kill—the snake. »11/14/14 3:19pm11/14/14 3:19pm

Reservoirs and hydropower are often thought of as climate friendly, but new research suggests that w

Reservoirs and hydropower are often thought of as climate friendly, but new research suggests that we may have underestimated the amount of methane they produce. The methane—which is 35 times as potent a greenhouse gas as CO2 over the span of a century—is produced by bacteria eating nutrient-rich agricultural runoff. »10/30/14 9:50am10/30/14 9:50am