we call that "opening your window" here in NE

Yes, but no electricity required. Unfortunately, they only work in dry climates.

In Mali, on the other side of the Sahara, we would get a beach towel wet, wring it out and go to bed.

The hydro evaporation cools you off while the towel over you dries.

Some folks would just take a shower and go to bed wet. That will cool you for a few minutes, but a towel works over an hour.

Once you're fast asleep, you don't notice the heat as much.

Our kids ask for an *air conditioner* when it is hot at night.

if there were, I would buy one. It would be even better if there were a blanket that did **both** .