Another interesting nerdy blog to follow...
“Just how big a building would you need in order to fit all of humanity inside?”
https://waitbutwhy.com/2015/03/7-3-billion-people-one-building.html
“Just how big a building would you need in order to fit all of humanity inside?”
https://waitbutwhy.com/2015/03/7-3-billion-people-one-building.html