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An ‘immortal’ jellyfish is swarming through the world’s oceans, according to scientists. The Turritopsis Nutricula is able to revert back to a juvenile form once it mates after becoming sexually mature. Marine biologists say the jellyfish numbers are rocketing because [...]

“If you look at the size of male testicles across the primate species, you can plot the degree of monogamy by the size of the testicles. Chimpanzees have very large testicles for their body size because they’re polygynous, everyone mates [...]