Approximately 71 to 95 million people in the Lower 48 states -- more than 20% of the country's population -- may rely on groundwater that contains detectable concentrations of per- and polyfluoroalkyl ...
There are about 100 geo-heritage sites, out of which 32 have been recognised as National Geological Monuments. Unlike archaeological sites, there is no legislation to protect geo-heritage sites.
The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide expert advice on some of the most pressing challenges facing the nation and world. Our ...