Giant dragonflies once roamed earth’s skies. New research upends the textbook theory of why they went extinct. Insects first took to the skies about 350 million years ago, some 200 million years ...
Some male dragonflies have a waxy coat that keeps them cool while pursuing mates and may also help the insects shrug off a warming climate. U.S. dragonfly species that produce the special wax are ...
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