The project is part of a nationwide study that works with citizen scientists and community volunteers to collect dragonfly larvae for mercury analysis. Scientists analyze the larvae to understand how ...

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 ...

One of the most accurate indicators of the health of the natural world is the ecosystem itself. For decades, scientists have studied certain species to learn about their habitats. This method 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 ...

At an aquatic laboratory nestled in Warrenville's Blackwell Forest Preserve, freshwater mussels grow in beakers, fish race up and down long holding tanks, and rare endangered dragonfly larva munch on ...

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 ...

(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 ...

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 ...