Quote Originally Posted by RichardM View Post
How was it estimated to such an exact figure? Wouldn't "about 8 billion" be more accurate?
I have no idea. You're correct though, it would have been better to have said circa 8 billion. Global population is increasing at a ridiculously high rate e.g in 1950 it was circa 2.5 billion. I should have just rounded up when I posted!