In the November issue, we misstated the annual amount of money the U.S. public-education system spends per student (Now). It is $10,000. In "Risk, Survive, Repeat," we wrote that ExxonMobil invested $2.2 billion to explore oil fields in the Arctic. It invested $3.2 billion.
A version of this article appeared in the February 2012 issue of Fast Company magazine.