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 ...

Scientists rethink why giant insects once ruled the skies, finding oxygen may not explain their size or disappearance.

The problem with diffusion is that it’s notoriously slow. The oxygen constraint hypothesis argued that the larger the insect grows, the further the oxygen must travel to reach the deepest tissues. “As ...

Scientific consensus is that high oxygen levels allowed these humongous fliers to exist, but a new study throws that idea ...

Scientists in Australia have discovered a new species of stick insect believed to be the heaviest in the country, weighing the same as a golf ball. The remote rainforest in Far North Queensland, ...