Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Sound travels fifteen times faster through steel than through air.
134
Iron weighs more after it rusts.
68
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
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
In zero gravity, a candle's flame is round and blue.
16
The left ear is more responsive to words of love and emotion whispered into it than the right.
40