Archive for September, 2010

$20 Bills on the Sidewalk

• September 28, 2010 • 2 Comments

Colonising New Planets, Peace and Trade

• September 21, 2010 • Leave a Comment

The thesis of Guns, Germs and Steel in one graph

• September 14, 2010 • Leave a Comment

Some big questions

• September 10, 2010 • Leave a Comment