From the New York Times Magazine:
This month, as in the past five Decembers, the magazine looks back on the passing year from a distinctive vantage point: that of ideas. Our editors and writers have located the peaks and valleys of ingenuity — the human cognitive faculty deployed with intentions good and bad, purposes serious and silly, consequences momentous and morbid. The resulting intellectual mountain range extends across a wide territory. Now it’s yours for the traversing in a compendium of 74 ideas arranged from A to Z.