Lots of people alive now will likely live on a 10 billion person earth http://www.wolframalpha.com/input/?i=world+population+1900+to+2050 http://www.wolframalp

Lots of people alive now will likely live on a 10 billion person earth http://www.wolframalpha.com/input/?i=world+population+1900+to+2050 http://www.wolframalpha.com/input/?i=world+population+1900+t...