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

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

Learn how ancient oxygen levels in the Paleozoic era were linked to giant insect size, and why that theory is now being ...

Three-hundred-million years ago, Earth was very different. The continents had coalesced into Pangea, which was dominated in ...

Fossil relatives of dragonflies, known as griffinflies, had wingspans of 70 centimeters (28 inches) 300 million years ago, and they weren’t the era’s only insects that far exceeded their modern ...

A previously unknown giant stick insect has been discovered in the high-altitude rainforests of Australia — and it may be the heaviest insect ever recorded in the country. The colossal critter, which ...

Scientists thought giant dragonflies couldn’t survive in today’s atmosphere – but a study of dozens of insect species shows ...

Rare giant stick insects now command market prices exceeding $1,000 for a single adult. These massive insects possess a fragile physiology that contradicts their imposing physical size. Some giant ...

When dinosaurs thundered across the land, a giant, cicada-like bug called Palaeontinidae flew in the sky and fed on tree sap. But something disturbed its peaceful existence — and triggered the ...

Have you ever seen a massive bug that looks like a twig or tree branch? Probably not, because these rare insects are masters of camouflage. Giant stick insects are some of the most expensive insects ...