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0:56 Meteorology
Count the Seconds After Lightning
0:45 Oceanography
How deep is the deepest ocean?
1:10 Genetics
How Two Metres of DNA Fit Inside a Cell
0:53 History of science
Why an Hour Has 60 Minutes
0:56 Ecology
The tiny workers behind your breakfast
1:13 Engineering
How a bridge hangs from two cables
1:05 Medicine
The doctor who said wash your hands
0:54 Music