Fireflies light up at chance of food This one gives a new meaning to the term ``after-glow.'' Cornell University researchers report that the females of one firefly species routinely imitate the mating signal of another species in order to have the males for dinner. The deception not only provides nourishment for the predator firefly, says Thomas Eisner of Cornell, but it also lets the female absorb from her victim a defensive chemical that wards off attack from birds, bats and spiders. Antibiotics fail against plague You'll see this one on the silver screen soon. Scientists have found a strain of the plague that's resistant to antibiotics normally used to treat and …
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