Experts in acoustics have debunked one of the more esoteric myths of the modern age - that a duck's quack is the only sound that does not produce an echo. The myth has been promulgated as fact by a ...
The world is full of unproven "facts". You'll hear them in a pub after a few drinks with some mates. You will probably read them in an email from a well-meaning friend within the first month of your ...
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