Researchers identified chemical traces of poison on 60,000-year-old arrowheads, meaning the artifacts bear the oldest known evidence of arrow poison.
Dec. 25 -- THURSDAY, Dec. 24 (HealthDay News) -- Some 128 million years ago, a bird-like raptor flew above what is now China. That's not terribly unusual, but there's a twist: It was poisonous, just ...
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