How do they get the stripes into toothpaste?

Ask the Naked Scientists

English - January 04, 2019 00:00 - 22 minutes - 20.7 MB - ★★★★★ - 60 ratings
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How do you measure time when traveling close to light speed? How do you predict the weather? Why don't zebras look dirty? How do they get the stripes into toothpaste? Why do wheels look like they spin backwards? Why can some people move their ears? Like this podcast? Please help us by supporting the Naked Scientists