Science

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The Gulf of Mexico has always been an oily place. Early sea captains wrote in their log books of slicks of oil. Mayan Indians used natural tars to seal their water jugs and waterproof their canoes. As many as 50…

The microscopic scratches and pits found on ancient teeth can be used to reconstruct the diets of human ancestors and ancient animals, science correspondent Miles O'Brien reports in his latest piece for the National Science Foundation's Science Nation.*…