Video · Do I Only Use 10% of My Brain? TwitterShare on Facebook889 1 279 050 views SciShow - September 29, 2014 Science SciShow More Videos The Weirdest Adoptions in the Animal Kingdom Science · 1 day ago The Weirdest Adoptions in the Animal Kingdom Science · 1 day ago How Rare Are Extra Organs? Science · 2 days ago How Radioactive Is Marie Curie’s Lab Today? Science · 3 days ago Mongols Attacked And The Earth Fought Back Science · 4 days ago The Quantum Quest for a Perfectly Random d20 Science · 5 days ago The Quantum Quest for a Perfectly Random d20 Science · 5 days ago The Priest Who Stole China’s Biggest Secret Science · 1 week ago