Do the Math Turbine blades spin faster than they look.

Deadly deception: Wind #turbines appear to move slowly, but do the math and you discover this is a dangerous illusion — and the reason why we support Bird-Smart Wind to minimize #bird deaths. https://t.co/EvOl1255Vf pic.twitter.com/MlDTpccAWn

— American Bird Cons. (@ABCbirds1) August 18, 2018