Webcomic Shatters Fermi Paradox
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An under-appreciated group of sharks' secret lives are now being revealed thanks to the wonders of satellite technology.
Last year, researchers estimated that California had lost 238 trillion litres of water over the course of 18 months of drought. Now, a huge reservoir of underground water -- three times bigger than engineers thought -- has been found under California. But it still won't solve the state's drought troubles.
British geophysicists have discovered evidence of an ancient drainage network buried beneath Greenland's ice sheet that once extended across nearly a fifth of its total surface. Some of the channels within this system were about a 1.4km deep and over 12km wide.