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0:46 Volcanology
Krakatoa: The Sound Heard 4,800 km Away
1:16 Game theory
Why smart people stop cooperating
0:54 Personal finance
The Rule of 72: How Fast Does Money Double?
0:57 Neuroscience
There is a hole in your vision
1:07 Botany
A tree is made mostly of air
0:43 Food science
Why browned food tastes better
1:13 Technology
GPS Only Works Because of Einstein
0:56 Philosophy