From roads and buildings to cars and plastic, human civilization is built on lots of stuff.
원문출처 : https://www.cnn.com/2020/12/09/world/human-made-mass-exceeds-biomass-report-2020/index.html
원문출처 : https://www.cnn.com/2020/12/09/world/human-made-mass-exceeds-biomass-report-2020/index.html