The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
Every human spent about half an hour as a single cell.
144
Babies crawl an average of 200m a day.
212
You forget 90% of your dreams.
256
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
76
Forty percent of Americans have never visited a dentist.
33
Infants spend more time dreaming than adults do.
102
