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

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 ...

The problem with diffusion is that it’s notoriously slow. The oxygen constraint hypothesis argued that the larger the insect ...

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

Following the recent storms in Bexar County, residents might notice large groups of flying insects — but what are these creatures? Molly Keck, an entomologist with the Texas A&M AgriLife Extension ...

Concern about insect losses has grown steadily, but most evidence comes from small studies focused on certain species or places. That makes it hard to understand what is happening at larger scales. A ...

Many plants, animals and insects are moving to higher elevations to escape the effects of a warming climate, but a strategy that is useful today may threaten their long-term future. Researchers at the ...