Balsa wood is classified as a hard wood!
41
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Liquid TIDE laundry detergent glows under a blacklight.
96
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310