New study outlines 'water world' theory of life's origins
Wednesday, April 16, 2014 - 02:29
in Astronomy & Space
Life took root more than four billion years ago on our nascent Earth, a wetter and harsher place than now, bathed in sizzling ultraviolet rays. What started out as simple cells ultimately transformed into slime molds, frogs, elephants, humans and the rest of our planet's living kingdoms. How did it all begin?