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Crucial steps leading to life unknown

By Robert S. Boyd Washington Bureau
1/83/8
YELLOWSTONE NATIONAL PARK, Wyo.

Scientists who are trying to figure out the origin of life on Earth are getting nearer to their goal, but they concede that they might never solve this profound mystery.

A crucial gap remains between the time when nothing was alive and the arrival of the first living creature….

At some point in between, lifeless molecules – combinations of atoms – learned to eat, breathe and reproduce.

No one is certain when and how they did it, however. “There are a lot of theories, but no solid explanation,” said Tom McCollom, a geochemist at the University of Colorado in Boulder. “We may never have one.”

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