4. The top one percent, state-by state; for a given income it is easiest to break into the top in New Mexico, toughest in Connecticut.
6. How good was Maria Callas? And Paul Krugman on the game of chicken unfolding in Greece (and Germany).
8. The guy behind Bounded Gaps Between Primes: “No one who knows him thinks that he is suited to a tenure-track position.”