we-are-star-stuff: How many people have ever lived on Earth? That question, it seems, has a long shelf-life, according to scientists at the Population Reference Bureau (PRB) in Washington, D.C., who say they often get information calls with that query.

we-are-star-stuff: How many people have ever lived on Earth? That question, it seems, has a long shelf-life, according to scientists at the Population Reference Bureau (PRB) in Washington, D.C., who say they often get information calls with that query.

tags: IL MIO LATO OSCURO...,

from: http://laharenthu.tumblr.com/post/64523834653