A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The only letter not appearing on the Periodic Table is the letter "J".
180
The earth is approx. 6,588,000,000,000,000,000 tons.
175