SciShow

Why Are Some World Records So Hard to Break? (2016x17)

Ημερομηνία προβολής: Φεβ 01, 2016

Why are some athletes able to crush world records when other records remain unbroken for years? The answer has to do with the kind of materials used in the competition and the type of athletic event one is competing in. Hank Green explains in this episode of SciShow.