Mercury

Mercury is a toxic chemical that can have devastating effects when it gets into our waterways. That's why scientists have been working on a new way to measure contamination levels using baby dragonflies.

New research shows that wildfires – especially intense ones – can raise concentrations of toxic forms of mercury - including its more toxic form methylmercury - in waterways.

Mercury contamination is well documented in the eastern United States. But USGS research ecologist Collin Eagles-Smith wanted to know how big of a problem…

Mercury is passing between the Earth and the sun Monday, an event known as a planet transit. It’s an event important to scientists that anyone with a…