1.   The homeless slept on subway grates to keep warm.

2.   Blasts of superheated air rising from subway grates meet superchilled air spilling outward through open doorways.

3.   Brown, who saw the homeless on midtown subway grates and, instead of looking away, organized a small shelter in his parish church, was one.

4.   Marilyn Monroe atop that subway grate.

5.   Some warm air streams up from the subway grates to help thaw their toes.

6.   Steam from a nearby subway grate catches her purple and orange sarong.