Are You Superman?
Superman, as we all know, is faster than a speeding bullet, able to... blah blah blah. You know the rest. But do you know how super you are?
The world population is rising and will continue well past the foreseeable future. When will it peak? How high will it rise?
Counting the World
If every person on earth lined up and marched past you, how long would it take to count them all? Go ahead and take a guess.