新葡京网站:Mercury U-turn, Texas fireball, and more


Neanderthal genome Neanderthals were lactose-intolerant and didn’t breed with their human cousins, says Svante Pääbo of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, who sequenced the genome of the extinct species. The information will help geneticists pin down when the DNA mutations that make us different from our primate ancestors occurred. Texas fireball A bright orange fireball that streaked through the skies of Texas on 15 February was a meteor, not debris from the collision between US and Russian satellites,
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