Rising sea levels are boosting the need for flood defenses. But the main material used in many man-made barriers is concrete, which can inflict its own huge cost on the climate and sea life.
원문출처 : https://www.cnn.com/2021/10/04/business/eco-concrete-ocean-biodiversity-climate-spc-intl/index.html
원문출처 : https://www.cnn.com/2021/10/04/business/eco-concrete-ocean-biodiversity-climate-spc-intl/index.html