Continuing with IDA's trivia, since we can see that outdoor lightning is not efficiently designed and part of that light is escaping to space:
How much money does wasted outdoor light at night escaping to space represent in annual energy cost, in the USA?
USD $100 billion
USD $1 billion
USD $50 billion
USD $1 trillion
Answer: USD $50 billion
The costs are not just monetary. Those funds could be invested in many different things. It is also the impact on climate change due to that inefficient lightning.
It is important to be mindful about how we use artificial lightning at night.
Photo and Source: IDA (International Dark-Sky Association) Trivia: https://www.youtube.com/watch?v=TKAuWAjrj68
















