Iron weighs more after it rusts.
16
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Sunflowers can be used to clean up radioactive waste.
17
A bag of marijuana was the first thing ever bought and sold over the internet.
22
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
By weight, Bone is five times stronger than steel.
417
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130