Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The bark of an older redwood tree is fireproof.
65
Sound travels about 4 times faster in water than in air.
408
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The only letter not appearing on the Periodic Table is the letter "J".
180
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Aluminum used to be more valuable than gold!
84
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75