

There’s a lot of things under the streets of New York, many of them cause heat. In order to cool them off the heat is vented outside and the warm moist air meets with the cool dry air and condensates into droplets that we see as steam. Same affect as breathing out on a cold day, you’re not creating steam but it looks that way because the warm moist air from your breath is condensing in the cool dry air.
The only person I know who supports these actions is literally known around my neighborhood as crazy Mike, because he’s crazy. He also openly admits he’s hypocritical, as he will condemn an action democrats do, but praise the same actions if they’re done by republicans. He knows he’s hypocritical but doesn’t see anything wrong with it. Like I said he’s crazy.