What are some interesting facts?

Answer by  bubbyboy (9929)

One fact I learned the other day is that the world population will top seven billion people in just a few years. Another is you can't tickle yourself.

Answer by  thorsdecree (409)

The platypus and echidna are monotremes- mammals that lay eggs. The United States incarcerates 1/4 of the world's drug offender population, many of whom in private prisons.