Caleb Kraft, secret genius, made a night light out of phosphorescent (the technical term is “glow-in-the-dark”) algae, and you can, too. Here is how:
- Buy the algae.
- Put it in a transparent container.
- Make sure it’s left in the light during the day.
- Shake it.
Really, that’s what it boils down to. Here, if you need more info, Caleb will explain.
But you need to make the light for yourself to see how totally awesome it is. And to scare your small children by telling them that their nightlight is ALIIIIIIIIIVE! (It’s not mean if it’s true.)
Glowing algae makes for a living night light, Treehugger.