Sound Waves Newsletter - April 2017

Coral reef erosion leaves coastal communities at risk, new report published on the seaward extent of remaining Arctic subsea permafrost, USGS researchers complete the Unmanned Aerial Systems certification training, Guy Gelfenbaum takes over as director of the USGS Pacific Coastal and Marine Science Center, Robert Rosenbauer retires from the USGS, and more in this April 2017 issue of Sound Waves.