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

Three hundred million years ago, dragonfly-like creatures with wingspans stretching 70 centimeters patrolled the skies of a ...

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

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

Insects first took to the skies about 350 million years ago, some 200 million years before birds first flapped their wings. By the end of the Carboniferous period, 300 million years ago, some flying ...

I have a pond and there are a number of dragonflies on the plants around it. They often hover over the water dipping their tails into the water. Are they harmful? N.D. Tulsa These insects are not ...

"I'm an aquatic entomologist, and dragonflies and damselflies are the most colorful and noticeable insects in the habitats in which I work," says Dr. Celeste A. Searles Mazzacano, a staff scientist ...

LANSING, Mich. — Move over monarch butterfly; a large and fast-moving dragonfly is also vying for designation as Michigan’s official state insect. A bill introduced this week in Lansing would ...

When summer heats up, I like to find some shade by the water. That’s where I find one of my favorite insects, the dragonfly. They seem fearless, landing on my leg or shoulder. They zip around ...

Vanessa Alarcon saw them while working at an antiwar rally in Lafayette Square last month. “I heard someone say, ‘Oh my god, look at those,’ ” the college senior from New York recalled. “I look up and ...