How did the first fish leave the water and begin moving across land hundreds of millions of years ago? Scientists may have uncovered an important clue, thanks to a combination of fossil evidence, ...

Add Yahoo as a preferred source to see more of our stories on Google. To figure out how long ago fish first appeared on Earth you need a way to measure really, really long time intervals. Clocks ...

The fox froze. Inches from his paws, frenzied, spawning carp writhed in the shallow water along a reservoir’s shore. In a sudden flash of movement, the fox dove nose-first into the water, emerging ...