California sea lions killed to protect migrating fish

Authorities in the western US state of Oregon have euthanized four sea lions in the last month as part of a program to protect salmon runs and steelhead trout that are at risk of going extinct.

Secrets of the cicada's sound

Of all the bugs that achieve the mantle of summer pest, cicadas are perhaps the most curious. They don't sting, they don't bite, they don't buzz around your head, they taste good in chocolate, but as the drowning din of the ...

Not so happy: King penguins stressed by human presence

King penguins tolerate some, but not all, human interference. Research published in BioMed Central's open access journal, BMC Ecology, investigates the adjustment of a king penguin colony on the protected Possession island ...

Chimpanzees are spontaneously generous after all

Researchers at the Yerkes National Primate Research Center have shown chimpanzees have a significant bias for prosocial behavior. This, the study authors report, is in contrast to previous studies that positioned chimpanzees ...

Active hearing process in mosquitoes

A mathematical model has explained some of the remarkable features of mosquito hearing. In particular, the male can hear the faintest beats of the female's wings and yet is not deafened by loud noises.

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