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0:54 Optics
Why a Rainbow Is Always a Circle
1:07 Chronobiology
Why Jet Lag Is Worse Flying East
0:53 Materials science
The 1,900-Year-Old Concrete Dome
0:48 Acoustics
Why Your Recorded Voice Sounds Wrong
1:04 Paleontology
T. rex is closer to you than to Stegosaurus
0:46 Volcanology
Krakatoa: The Sound Heard 4,800 km Away
1:16 Game theory
Why smart people stop cooperating
0:54 Personal finance