To test bats’ sense of the speed of sound, researchers put them in an atmosphere that alters it. No word on whether the helium made the bats...
To test bats’ sense of the speed of sound, researchers put them in an atmosphere that alters it. No word on whether the helium made the bats sound funny.
http://dlvr.it/RzGcYn
http://dlvr.it/RzGcYn
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