Three-hundred-million years ago, Earth was very different. The continents had coalesced into Pangea, which was dominated in its equatorial regions by vast coal-swamp forests. With high atmospheric ...

Before birds or bats took flight, the skies were filled with insects, and some of them were enormous. Around 300 million years ago, dragonfly-like creatures with wingspans reaching 27 inches (70 ...

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 ...

Have you ever found yourself looking at the insects of the Paleozoic era, including the dragonfly Meganeuropsis permiana with its 71 cm wingspan and wondered what it would be like to have one as a pet ...

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 ...