Genetic material extracted from the bones of prehistoric European
Homo sapiens, or Cro-Magnons, fueled the controversial theory that people and Neandertals didn’t interbreed . S. RicciPlanetary scientists discovered ice near the edge of Mars’ south polar cap . Melting snow may have sculpted the recently formed gullies on Mars . The presence of large amounts of the mineral olivine argued against ancient oceans or lakes on Mars .
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