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Rocks that make up Canada, Greenland, and Hawaii may be what’s left of the original Earth before a Mars-like asteroid hit billions of years ago

Armed with that information, the researchers went about gathering samples from the areas of land that are believed to be the ...
Popular Science

Stone Age humans traveled for miles to find the perfect rocks

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. It may not seem like it at first, but there’s a big difference ...