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The Mysterious Swimming Habits Of The Ancient Ammonite

These extinct shelled cephalopods ruled the ocean for 300 million years. But how they swam and shaped the seas remains a mystery.

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Cool As Ice

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The Long Shot

More than two decades ago, a geologist traveled to Argentina to hunt for hidden craters. What he uncovered could change how we look for extraterrestrial life.

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The Long Shot

More than two decades ago, a geologist traveled to Argentina to hunt for hidden craters. What he uncovered could change how we look for extraterrestrial life.

Read More