It was 97 degrees outside, so I found a shady alcove to stand under while I waited for the air conditioned bus to arrive.
One wall of the alcove had a large vent.
As I stood there, I started to feel a nice cool breeze. And then I realized that the vent was seeping cool air from inside Hunter College right onto me! It wasn't much, but just enough to keep me cool. What a relief! (Environmentalists, not to worry - it wasn't full blast AC seeping out of the building).
If you're ever walking down Lexington Avenue during the hot summer months and need a bit of cool air, either step into a store, or stand near this vent on the NW corner of 67th and Lex!