Researchers argue that a newly examined specimen found decades ago in Utah provides new clues to the ancestors of ...
A Utah fossil shows early relatives of spiders and scorpions already had distinctive front claws 500 million years ago.
Experts are reporting a spike in activity as the western U.S. faces a record-breaking heat wave.
This year's early heat waves have caused scorpions and rattlesnakes to emerge sooner than the animals' typical seasons.
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