Chart of the greatest and most remarkable achievement in human history, and one you probably never heard about | AEIdeas

http://www.aei-ideas.org/2013/12/chart-of-the-greatest-and-most-remarkable-achievement-in-human-history-and-one-you-probably-never-heard-about/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+blogspot%2FmmMP+%28CARPE+DIEM%29#mbl


---Steve