December 13st, 2013

Snow removal. Photo: shutterstock

Why do we spread salt on ice covered surfaces in winter?

The late John Margrave, professor of chemistry at Rice University, provided this answer: In short: Salt melts ice. From the question and answer section of Scientific American magazine.
Astronaut Geraldo Carr, member of the Skylab 4 crew on the Space Station Skylab. Photo: Nas A

Skylab 4 - the last manned mission to the space laboratory