Fact or Fiction (S4E1)
6/20/2015
Speed Freaks (S4E2)
6/27/2015
Home Hacks (S4E3)
7/4/2015
No Limits (S4E4)
7/11/2015
Win or Fail (S4E5)
7/18/2015
Demolition Derby (S4E6)
7/25/2015
Superhuman (S4E7)
8/1/2015
Forces of Nature (S4E8)
8/8/2015
Insane Inventions (S4E9)
8/15/2015
Weird Science (S4E10)
8/22/2015
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