All of the humans on Earth can fit into Texas.  The world isn't over populated.  Over 50% of the earth is still covered in dense forest. 

Sure, parts of the world are heavily populated, but others areas aren't.   If we all had as much space as the average Alaskan, we'd need over 100 Earths to fit everyone.


[Link: fastcompany.com]

[Link: bbc.com]