Selecting a random sample from a set is simple. But what about selecting a fair random sample from a set of unknown or indeterminate size? That’s where reservoir sampling comes in, and [Sam Rose] has ...

When the Fagradalsfjall volcano in Iceland awoke in spring 2021 after 815 years of slumber, the geochemists and petrologists at the University of Iceland knew they wanted a sample. It was a rare ...

Stormwater management is essential for environmental health and community safety. Good sampling and monitoring equipment will furnish the fundamental data required for analyzing water quality and ...