We have enough RF pollution as it is imagine having megawatts of energy flying through the air around you. The tech is not much different than a high power radio signal. Tesla proved that it works and is the same principle of induction as charging cell phones but the practicality is not good. Something like 30% of energy gets lost in resistance and hysteresis loses with conventional power transmission; it would be much higher with Tesla's tech. Tapping the voltage difference in the air between different altitudes may be practical for some home power stations that have the acreage. Pulsing the magnetosphere sounds dangerous to me.
I used to live up there in AK. Evergreen air used to fly a Huey over my house every day on it's way out towards where Soldotna is. Not sure if that was their destination but would not be surprised.
It's called tropospheric ducting and has been utilized by us hams for decades. There is nothing particularly efficient about wave-guides or they would be used instead of radio transmission lines like coax. Wave guide's advantage is at extremely high frequencies which the space between ground and the troposphere is not resonant for. There is no free ride
People are freaking out about puny 5G signals and the same ones want gigawatts of energy flying through the air around them.
No it's Tesla slide I started last bread. Free energy buffoons are as easy as FEs.
No, AM radio is called ground propagation because of it's low frequency and loss of D layer absorption at night.