It is happening daily actually. If you observe the "planes" in the sky you will soon differentiate which are the geo-planes and which are the civilian planes. Civilian planes do not fly over cities as constantly as the geo-planes do. They also do not leave condensation for days. Once hot air reaches atmosphere temp it vanishes and is no longer seen, this is the cold reservoir concept from physics. A reservoir that is hot or cold and is large will experience little change to the temperature. Take a look at a boiling kettle of water. Does the steam stay in your room like a cloud? It vanishes because your room is a cold reservoir and the steam reaches room temp. in seconds; therefore the white steam blends and vanishes with the room air. Same thing with civilian planes; the steam is hardly seem and lasts for seconds. The stuff that stays in the air is chemicals reacting with atmosphere. Observe long enough and you will connect the dots.