Giant prehistoric insects may not have depended on high oxygen levels after all. Scientists now think something else must ...

Ancient Earth once buzzed with enormous dragonfly-like insects, and scientists long thought high oxygen levels made their ...

Researchers at the U.S. Department of Energy's Argonne National Laboratory have cast new light on why the giant insects that lived millions of years ago disappeared. In the late Paleozoic Era, with ...

Three hundred million years ago, dragonfly-like creatures with wingspans stretching 70 centimeters patrolled the skies of a world nothing like our own. These griffinflies, as paleontologists call them ...

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 ...

Insects have been assumed to breathe through a system of tracheal tubes (considered passive air channels), with gaseous exchange being driven by body movements or hemolymph circulation. However, the ...