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0:48 Geography
Where Egypt Actually Lives
1:16 Earth science
The continents are still moving
0:50 Chemistry
Why Ice Floats—and Keeps Lakes Alive
0:48 Physics
Why the Sky Is Blue
1:07 Biology
One Day in the Life of Your Heart
1:03 Astronomy
If the Sun Were a Basketball
0:56 Information theory
Why a torn QR code still scans
0:53 Biomechanics