LEXAN
Airplanes are often pressurized. A large window would be excessively difficult and expensive to make it strong enough to not blow out. So they use small windows on airplanes.
To keep the temperature inside the airplane nice.
keep it closed the windows .but if need fresh air from outside , open the windows.
Airplanes have broken up in flight after the windows failed.
Closed! If you leave the windows open all the cool air will go out the windows, and your house won't get cool.
you just answered your own question, because your in a crowded room where the windows are closed
Windows should be closed during strong winds to prevent them from entering the house and causing damage.
sitting in a running car with windows closed is any fumes released inside of car.
check the heater core. it may be leaking.
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