Bats are some of the most misunderstood mammals on the planet. While some do drink blood, the vast majority enjoy a diet of insects, helping keep ecosystems in check. One such bat, the brown ...
G'day, Dr Karl here. Now most of us know that some bats find their way around using sound. This is called echolocation, and we've known about it since the 1930s. But just recently we discovered that ...
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Anybody who has been passed by an ambulance at high speed has experienced a physical effect called the Doppler shift: As the ambulance moves toward the listener, its motion compresses the siren's ...
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