SciShow Kids: What's the Dirt on ... Dirt?
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A SciShow Kids viewer has asked us: What is dirt made of? Join Jessi to get the dirt on … dirt!
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Launched as a beta version in 2009, SafeShare has gained popularity as the safest way to watch and share YouTube and Vimeo videos, and is widely used all around the globe by educators so their students can watch educational material without the fear of inappropriate videos showing up.