How Much Energy Does The Internet Use? And Other Science Explainers

If you love a good explainer, you’ll love SciShow, a prolific YouTube channel (nearly 700 videos) that tackle science and technology questions in bite-sized primers, usually around three minutes long. Here are a few to jumpstart your cocktail party small talk for this weekend.

Redheads make up only 1-2 per cent of the population but get 99 per cent of the unloved stepchild insults. Why do some people have red hair, and is there an evolutionary reason?

This sounds like the physics test word problem from hell.

Five of the last seven US presidents were lefties. Is there a reason?

“Whatever you do, don’t press this button…”


Animals know how to self-medicate. See, they’re just like us! This was actually the plot of the long-lost Look Who’s Talking 4.

It’s not the mint! Learning to brush your teeth after breakfast, not before, is just one of life’s trials all must weather.