You are here. Home > Data Access > Model > Datasets > Global Ensemble Forecast System (GEFS) A regional North American plot of GEFS forecast data valid at July 13, 2012, at 00 UTC. This 24-hour forecast shows one mean sea-level pressure contour (or isobar) at 1013 hPa for each of the 21 members in the ensemble.
Inventor Mary Anderson received a patent for her car-window cleaning device in 1903. Anderson's invention came about during a trip to New York City when the Alabama-born inventor noticed that streetcar drivers had to open the windows of their cars when it rained in order to see.
The Amazing History of Windshield Wipers The Incredible Little Invention that Changed the Face of Driving. When the precipitation starts to fall, your reaction is almost automatic. The windshield starts to dapple with dots of melting snow or beading rain, and your hand reaches for that little lever next to the steering wheel. Click. Your windshield is clear again. At this point, you probably notice your windshield wipers as much as you notice how often you blink or how many times your heart beats in a minute. It's become second nature. But the history of these little lifesavers is fascinating. Mother Nature and the Necessity of Invention