Professor Stick Explains

Why did humans used to sleep twice a night? How can a sugar cube weigh a billion tons? Professor Stick and Dr. Blob answer the science questions you never knew you had — one fact, one minute, zero jargon.

New Shorts every week: space, the human body, history's weirdest science, and the everyday mysteries hiding in plain sight. Easy to understand, impossible to forget. Subscribe for your daily dose of "wait, really?"