This always reminds me of people snickering about how much snow is in their backyard whenever the topic of climate change comes up. If you subtract the 15% uno

This always reminds me of people snickering about how much snow is in their backyard whenever the topic of climate change comes up. If you subtract the 15% unoccupied rate from your link from the 6.6 gigatons of concrete, it's still a lot more than the U.S. used in 100 years.