Life & Evolution

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Woolly mammoths

Woolly mammoths were fat, hairy and could tolerate extreme cold. Now researchers have tracked down some molecular changes that contributed to those adaptations.

Geophilus hadesi centipede

UNDERWORLD  This male Geophilus hadesi centipede was found over 1,000 meters belowground in a cave in Croatia. G. hadesi is the deepest-dwelling centipede yet discovered. 

Macrostomum hystrix flatworm

If there’s no other flatworm around for mating, a tiny translucent Macrostomum hystrix flatworm will inject sperm into its own head or any other convenient body surface. 

Life & Evolution

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