Sam Kean quotes and aphorisms about every Sam Kean Sam Kean ,, The idea of critical windows extends beyond just vision, of course: almost every system in the brai... Sam Kean Sam Kean Sam Kean Sam Kean Sam Kean Sam Kean Sam Kean ,, In some sense, what you might have suspected from the first day of high-school chemistry is true: T... Sam Kean ,, Over the years, humans have managed to incorporate nearly every element, light and weighty, common ...