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Topic: Earth · 2 stories (clear)

• Pull-Top Can Tabs, At 50, Reach Historic Archaeological Status
  Science · Earth · 2015-04-19 19:30 · posted by timothy · from the remember-making-giant-chains-of-these dept. · 120 comments
• If Earth Never Had Life, Continents Would Be Smaller
  Science · Earth · 2015-04-19 07:20 · posted by timothy · from the war-of-concretion dept. · 64 comments