I've always known Japan is No. 1 but had no idea Hong Kong is No. 2.
They don't have the healthiest life style. Hours of sleep is definitely not 8 hours. Many work for 10-12 hours daily. I wonder why.作者: tofu 時間: 2010-5-6 21:49
what is the formula for calculate the life expectancy.
if a new born baby die, we need eight 90years person to keep the life expectancy at age 80 wor.
