Each day, up to 150 species of life become extinct.
-23
Sound travels about 4 times faster in water than in air.
408
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
A cesium atom in an atomic clock beats over nine billion times a second.
43
Indoor pollution is 10 times more toxic than outdoor pollution.
62
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17