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Deep inside a famous cave, scientists discovered fossils of two ancient sharks that once swam the oceans 325 million years ago

Deep beneath Kentucky, scientists have uncovered the remains of two unknown prehistoric sharks that swam through ancient seas ...
Knowledgia on MSN

They told you America’s first people walked across a land bridge - evidence suggests they came by boat

The traditional Bering Land Bridge theory places the first human migration into North America around 16,000 years ago, but archaeological discoveries suggest people may have arrived thousands of years ...