A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
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
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Out of all the senses, smell is most closely linked to memory.
146