Very interesting article on the NASA blog about how human activity can affect Space Weather around our planet. From the article:
“A number of experiments and observations have figured out that, under the right conditions, radio communications signals in the VLF frequency range can in fact affect the properties of the high-energy radiation environment around the Earth,” said Phil Erickson, assistant director at the MIT Haystack Observatory, Westford, Massachusetts.”
Click HERE to watch a video by NASA about VLFs (very low frequency waves); a screenshot from this video is seen below.
Another NASA video (screenshot below) explains how “Human Activity Impacted Space Weather“, based on results of experiments from Cold War nuclear tests.