Random Twitter post, is it generated video or anything worth looking at?

Very impressive video! Such sprites must have been seen at that altitude often enough in history, and as they're quite distinct from lightening I wonder if there is an historical record of them?

Yes, and that influence reaches far outside of the cities themselves. I only realized this after moving to rural Canada where on a clear night you would see the sky in a way that you could never see it within 30 km of any major city. It is hard to describe in words, you'd have to go up North during a cold winter night and lay down and stare upwards.

Yeah - sitting on a porch near Newark, NJ, the sky is a bright hazy dome overhead.

It reminds me of growing up in a big city, too - walking along, looking at the multi-colored clouds above me.