Indoor pollution is 10 times more toxic than outdoor pollution.
62
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17