Why do research on EM waves?

“There’s a lot we can learn from EM waves that can help us in future for energy conservation, generation as well as transmission. This is an area of research that should be picked by universities.”

https://www.reddit.com/user/workrockin/comments/dajisx/where_does_the_energy_go_when_two_em_waves/f2956ha?utm_medium=android_app&utm_source=share