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- 1Asteroid, Island of Stability, ObesityOctober 3, 2006
- 21918 Flu, Mass Extinction, PapyrusNovember 21, 2006
- 3Aging, Space Elevator, MayaJanuary 9, 2007
- 4Sleep, CERN, EmergenceJuly 10, 2007
- 5T. Rex Blood?, Epigenetics, KryptosJuly 24, 2007