Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Ecologists often rely on health data of fish and bird populations to ...

Dragonflies, those colorful bugs zooming around like mini-helicopters, are more than just a spectacular sight. These iridescent predators may also be the best way to detect where and how mercury—a ...

Dragonfly larvae sampled from Cape Cod and Minuteman National Historical Park recently helped tell a much bigger story about mercury pollution in the U.S. A national study published this week in the ...

A years-in-the-making model developed by the National Park Service and U.S. Geological Survey could offer a deeper look at mercury concentration levels on federal lands across the country — including ...

With 360-degree vision, bright-colored bodies that sparkle jewel-like in the sun, and acrobatic flight patterns reaching speeds of nearly 35 miles per hour, dragonflies are some of the more glamorous ...

As one of the first-ever evolved winged insects, dragonflies have inhabited the earth for almost 300 million years. We instantly recognize these animals by their beautiful outer appearance and their ...

"Combines for the first time the original Volume 1 on dragonflies (2007) and Volume 2 on damselflies (2009)"--Foreword. "This field guide should only be used for larvae and exuviae of species that ...

EDITOR'S NOTE: Rudolf Schilder, assistant professor of entomology at Penn State University, took some time to explain why Pennsylvania residents are seeing so many dragonflies this month. He studies ...