When pressure builds up, or tectonic plates shift, or where the crust is thin, volcanoes can erupt. There are 1,511 known volcanoes, 500 of which are active. Every now and then, a new one forms, as happened in 1943 in Paricutin, Mexico.
The average life expectancy for Japanese men is 80.5 years of age, while for women, life expectancy was calculated at 86.83 years of age, Fuji TV reported Friday.
Japan's population is aging faster than any other nation. The population of those 65 years or older roughly doubled in 24 years, from 7.1% of the population in 1970 to 14.1% in 1994. The same increase took 61 years in Italy, 85 years in Sweden, and 115 years in France.