Kari Byron, former host of MythBusters and host of Crash Test World, reacts to Dr. STONE! Watch Dr. STONE on Crunchyroll! http://got.cr/cm-karibyron
0:00 Intro
0:11 Agriculture
0:44 Gunpowder
1:57 Ironmaking
2:56 Magnets
3:58 Lenses
5:04 Cotton candy
6:26 Old tech
7:56 Flares
9:37 Lost wax casting
10:20 Final thoughts
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