Tag Archives: USGS

An orchid so elusive, 70 years elapsed after George Henry Grinnell collected the first specimens in 1923 before a new generation of botanists rediscovered its location in 1993. But the plant’s identity remained a challenge to taxonomists. Now, two U.S. Geological Survey botanists and a colleague at the New York …

Yosemite National Park and USGS scientists, in collaboration with academic geologists, recently completed a comprehensive study of rockfall hazard and risk in Yosemite Valley. This internationally peer-reviewed study utilized new data and technologies to map the cliffs and talus slopes, date ancient rockfalls, and perform computer simulations of potential future …

A new nationwide study has unearthed the huge hidden potential of tapping into salty aquifers as a way to relieve the growing pressure on freshwater supplies across the United States. … Click to Continue »