News tagged with embryos

Long-lived mice are less active

Female mice with a high life expectancy are less active and less explorative. They also eat less than their fellow females with a lower life expectancy. Behavioral biologists from the University of Zurich reveal that there ...

dateJul 04, 2013 in Plants & Animals
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How birds lost their penises

In animals that reproduce by internal fertilization, as humans do, you'd think a penis would be an organ you couldn't really do without, evolutionarily speaking. Surprisingly, though, most birds do exactly that, and now researchers ...

dateJun 06, 2013 in Plants & Animals
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