U.S. Geological Survey scientists, with help from many volunteers, find the effects that Colorado River hydropeaking has on aquatic insects.
Using automated data loggers, fluorometry probes and other equipment, Ohio EPA scientists work to define harmful stream nutrient levels.
Last December, I talked to USGS aquatic entomologist Joe Giersch about his work tracking down the western glacier stonefly, an incredibly rare insect that lives only in the cold, glacier-fed streams of Glacier National Park. Those bug...