What does it really mean when a person "catches the scent" of another? An evolutionary biologist set out to discover if and how our sense of smell influences our choice of a mate. The immune system's MHC genes often appear to play a key role.
Sex is a serious business for arachnids, and male spiders are often eaten by the female after mating. So spiders have had to develop strategies to help pass on their genes. The males have found a work-around.
Off the coast of New Zealand, conservationists are sequencing the genome of kakapo parrots to try and bring the bizarre flightless bird back from the brink. They're also tracking every detail of its strange sex life.
It has been traveling through countless galaxies for 50 years. Now, in the 13th feature film based on the "Star Strek" series, the USS Enterprise is off on yet another new mission. Revisit the cult.
Whales, chimps, dogs - animals seem to suffer when they lose a beloved companion or offspring. Do animals understand death, and do they grieve like humans? Or are we just projecting our understanding on their behavior?
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