Modern historians often trace the beginning of the environmental movement to 1970, when Gaylord Nelson, a former Wisconsin governor (1958-1962) and a senator (1963-1981), wanted to foster dialogue and conversations about environmental issues. Nelson's teach-ins formed Earth Day, a catalyst moment that brought the environment into the political and cultural zeitgeist, forever changing its perception by the masses.
Floods are among the most common and destructive natural disasters. They affected more than 2 billion people worldwide between 1987 and 2017, according to the World Health Organization. As floods keep increasing in frequency and intensity due to climate change, flood-proof architecture is becoming an issue of growing importance.