Various forms of mercury are released naturally by volcanoes and weathering of rocks and soil. Human activities, such as mining or burning fossil fuels, can also release the element into the ...

Carlsbad Caverns National Park staff recently collected dragonfly larvae for the Dragonfly Mercury Project. The project is ...

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 ...

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 ...

(a) Number of observation records per 500-m elevational band. (b) Number of genera and the number of their observation records in the database. (c) Cumulative number of observation records of each ...

The Lockport Prairie Nature Preserve provides a summer home for a small group of an endangered species of dragonflies born and raised in a biology lab in South Dakota. A team of ecologists with 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 ...

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 ...