Seen from space, our planet has often been called a "blue marble." It's not, however, just the swirly white clouds that give Earth its marbled appearance. The continents: They are what complete the ...
Morning Overview on MSN
20 surprising clues Pangea left behind showing how continents once fused
Pangea may have vanished 200 million years ago, but it left a trail of clues in rocks, fossils, and even magnetic fields that ...
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