The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
Kilts are not native to Scotland. They originated in France.
57
The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
240
The human eye blinks an average of 4,200,000 times a year.
233
An iceberg contains more heat than a lit match.
73
The number of births that occur in India each year is higher than the entire population of Australia.
66
Less than 3% of the water produced at a large municipal water treatment plant is used for drinking purposes!
24