The “backwards brain bicycle” is built for frustration. It turns right when you turn left, left when you turn right. Destin, of YouTube channel Smarter Every Day, thought it would be easy to translate his mechanical knowledge of how the backwards bike works into a smooth ride. He was wrong (for a few months, at least).
A bright street lamp can ruin a night of stargazing, saturating your retinas with light and washing out the comparatively faint glow of constellations and meteors. Here's a handy hack you can use the next time you need to put one temporarily (and reversibly) out of business, courtesy of NASA astronaut Don Pettit.
Cnidarians like anemones and jellyfish extend nematocysts, stinging organelles capable of shooting venom into another creature. The nematocysts are too small and move too quickly to be seen by the naked eye—but now they've been captured through a microscope with a high-speed camera.
If you don't already know why a helium balloon tethered to the floor of a minivan has the power to make your jaw drop, you're going to want to see this. Seriously – set aside five minutes of your time, have a seat and watch. You won't regret it.
They're also surprisingly counterintuitive. For instance: who here thinks that the sweepers' job is to increase or decrease the friction of the ice in front of the stone to make it curl? I definitely did. Turns out that's totally wrong. And it's still not even the weirdest thing about the physics of this sport.
Stop what you're doing and watch this. No, really. Clear your schedule for the next seven minutes and have a seat. This here's the story of Prince Rupert's Drop – and if you're into physics, high-speed video, explosions, or the feeling of your jaw falling open in an involuntary expression of sheer wonderment, it's a…
Here to give us the down and dirty on space excreta (because let's face it, you were always curious) is Minute Physics' Henry Reich and Smarter Every Day's Destin. It's a match made in YouTube science-explainer heaven. With poop. And spacecraft-trajectory-altering pee. In spaaaace.