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News From the Field
Two Vortex Trails With One Stroke

February 25, 2013

two trails of vortices produced by hummingbirds As of today, the Wikipedia entry for the hummingbird explains that the bird's flight generates in its wake, a single trail of vortices that helps the bird hover. But after conducting experiments with hummingbirds in the lab, researchers at the University of California, Riverside, proposed that the hummingbird produces two trails of vortices--one under each wing per stroke--that help generate the aerodynamic forces required for the bird to power and control its flight. Full Story

Source
University of California, Riverside

The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2014, its budget is $7.2 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives about 50,000 competitive requests for funding, and makes about 11,500 new funding awards. NSF also awards about $593 million in professional and service contracts yearly.

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