The Vatican has a crime rate of 133.6%.
In darkness, most people eventually adjust to a 48-hour cycle: 36 hours of activity followed by 12 hours of sleep. The reasons are still unclear.
5.2% of world trade comes through Hong Kong.
The motto on the very first official United States coin was "Mind Your Business".
More than half of Americans made it to age 80 in the year 2000.
Cancer mortality rate has fallen from 215 deaths per 100,000 people in 1991 to 172 deaths per 100,000 people in 2010.
In half of Asia and Africa and two-thirds of Europe, households pay a "TV licence" every year.
Four planet Earths would be required to sustain the levels of consumption of the U.S.
The Earth lost 40% of its wildlife in the past 40 years, according to the WWF.
The world's heaviest pumpkin had 2,096 pounds (950 kg).