(NPR) ‘The Big Squeeze: Can Cities Save The Earth?’

An Excerpt:

Let’s get dense. If we take all the atoms inside you, all roughly 70,000,000,000,000,000,000,000,000,000 of them, and squeeze away all the space inside, then, :

“Remove all the space within the atoms making up the human body, and every person that’s ever lived would fit inside a baseball.”

That’s a very tight fit. So tight that in real life, it couldn’t happen. It’s not physically possible. Atoms won’t crunch that close. But people, it seems, are willing to try. In the last century, all over the planet, billions of us have moved from villages and farms to squeeze into tighter and tighter, ever denser spaces …

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http://www.npr.org/blogs/krulwich/2013/04/08/176565424/the-big-squeeze-can-cities-save-the-earth