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Overview: |
Glacier Meltdown (S4E1)1/31/2007
Destructive Forces (S4E2)2/21/2007
Stone Age Apocalypse (S4E3)2/28/2007
Comets (S4E4)3/7/2007
Prehistoric Americans (S4E5)3/14/2007
Deep Space Probes (S4E6)3/27/2007
Dino Meteor (S4E7)4/12/2007
Planet Storm (S4E8)4/26/2007
Polar Apocalypse (S4E9)4/1/2007
Killer Lakes (S4E10)5/3/2007
Ring of Fire (S4E11)8/2/2007
Alien Safari (S4E12)8/9/2007
Hyper Hurricanes (S4E13)10/18/2007
Dangers of the Deep (S4E14)10/25/2007
Solar Force (S4E15)10/30/2007
Birth of the Solar System (S4E16)11/6/2007
Hubble Trouble (S4E17)11/6/2007 |