American school children rank 25th in math and 21st in science out of the top 30 developed countries, but ranked 1st in confidence that they outperformed everyone else.
7
Pumice is the only rock that floats on water.
14
More people in Africa speak French than in France itself.
12
The human brain is more active during sleep than during the day.
28
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Some British police cars carry a teddy bear to console children after an accident.
46