3 ms·
Is it? Where do you see that trend? http://cdn.phys.org/newman/gfx/news/hires/worldpopulat.gif http://cdn.phys.org/newman/gfx/news/hires/worldpopulat.gif
by cmdrfred 12y ago
Is it? Where do you see that trend?
http://cdn.phys.org/newman/gfx/news/hires/worldpopulat.gif http://cdn.phys.org/newman/gfx/news/hires/worldpopulat.gif