[Anonymouse]

Originally Posted by patrickp

Nope. Definitely William Shatner. Wasn't it one of the episodes revisited in the Twilight Zone movie? Maybe that's what John Lithgow was in.

Oh, right, I thought you were talking about the movie. I forgot it was a revisit. My bad.
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Did you know that arms races aren't unique to homo sapiens?

To explain: some species of bat home in on moths using their sonar in order to pick them off on the wing. However, some species of moth then evolved the ability to detect the sonar; the moth judges how close the bat is by the strength of the signal and, just before the bat strikes, the moth evades it. Effectively, the moth is watching its six.

Other species have taken this further, by evolving the ability to produce what can only be described as a jamming signal: they detect the vibrations of the bat's sonar and broadcast their own signal at nearly the same frequency, thus confusing the bat and giving the moth a few seconds' grace before the bat strikes.

Sooner or later, of course, the bats will probably evolve the ability to change their sonar frequency rapidly, to confuse the moths and thus regain the upper hand. And so on.
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Did you know that not only does the female praying mantis chew the male's head off while they're...at it..., not only does he carry on regardless, but in fact, he can't do the business unless she chews his head off. The action of eating his head triggers the production of certain chemicals which make fertilisation possible.

It seems rather extreme, having your head chewed off - and your body devoured afterwards, too - just for a bonk. Still, whatever floats your boat.