arthur firstenberg looks at it in a rather alarming manner :
https://parentsandconcernedcitizensagainst5g.com/5g-space-appeal-1st-of-december-2018/"The alteration of the Earth’s electromagnetic environment may be an even greater threat to life than the radiation from ground-based antennas".
"Adding 20,000 5G satellites will further pollute the global electric circuit[74][75] and could alter the Schumann resonances,[76] with which all life on Earth has evolved. The effects will be universal and may be profoundly damaging."
"The Earth, the ionosphere and the lower atmosphere form the global electric circuit[52] in which we live. It is well established that biological rhythms—of humans,[53][54] birds,[55] hamsters,[56] and spiders[57][58]—are controlled by the Earth’s natural electromagnetic environment and that the well-being of all organisms depends on the stability of this environment, including the electrical properties of the atmosphere.[59][60][61][62] Cherry, in a groundbreaking paper, [63]explained the importance of the Schumann resonances[64] and why ionospheric disturbances can alter blood pressure and melatonin and cause “cancer, reproductive, cardiac and neurological disease and death”.
"The placement of tens of thousands of satellites directly in both the ionosphere and magnetosphere, emitting modulated signals at millions of watts and millions of frequencies, is likely to alter our electromagnetic environment beyond our ability to adapt."