Why study history?

a) Because it's there.
b) Chicks dig it.
c) It's on the exam.
d) "Those who cannot learn from history are doomed to repeat it." (George Santayana)

Nicholas D. Kristof of The New York Times draws a parallel between the ancient city of Kaifeng, one-time "capital of the world," with modern New York City. Also click on the multimedia presentation "Kaifeng-on-the-Hudson."