For years, giant prehistoric insects were considered proof that Earth once needed oxygen-rich air to sustain oversized life forms. A new study published in Natureis now challenging that assumption.
Add Yahoo as a preferred source to see more of our stories on Google. The griffinfly, now extinct, once stretched its wings nearly 70 centimeters wide. (CREDIT: Werner Kraus / Wikimedia / CC BY-SA 4.0 ...
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 ...
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