Bats Raised in Helium-Rich Air Reveal a Key to Echolocation

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.

Bats Raised in Helium-Rich Air Reveal a Key to Echolocation
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.
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