The glue on Israeli stamps is certified kosher.
67
You can tape a small mirror onto a cone speaker, play music and shine a laser on to the mirror and the reflection will look like a laser light show on your wall.
102
Sudbury Valley School allows students to do whatever they want; no curriculum, tests, homework, or even classes unless requested. 82% of students get accepted to college, as opposed to the 63% national public school average.
21
"Strategic incompetence" is the art of avoiding certain tasks by pretending you don't know how to do them.
16
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
The "Cobra Effect" is where a solution for a problem actually makes the problem worse.
21
Sunflowers can be used to clean up radioactive waste.
17
Déjà vu occurs when your brain tries to apply a memory of a past situation to your current one, fails, and makes you feel like it's happened.
12