Thanks for your sharing. Perhaps in the future once gravity is better understood, we will know if it can be depleted. I imagine 200 years ago nobody worried o

Thanks for your sharing. Perhaps in the future once gravity is better understood, we will know if it can be depleted. I imagine 200 years ago nobody worried overly much about burning coal or later, kerosene etc. The atmosphere is a pretty huge volume and besides, the rain cleans the air. ... one can imagine sentiments like that being directed at anyone complaining about air pollution.