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Destructive floods struck Central China,the United States,England,India,and many other places in 2015,particularly during November and December when very strong El Nino conditions developed.These events have magnified a long and tragic list of losses of life and property.Yet floods need not be catastrophes.Floods are a natural and largely beneficial part of the natural cycle,while flood damages and fatalities are mostly a consequence of human folly.Cities must be built where wa-
Destructive floods struck Central China, the United States, England, India, and many other places in 2015, particularly during November and December when very strong El Nino conditions developed. These events have magnified a long and tragic list of losses of life and property. Yet floods need not be catastrophes. Floods are a natural and substantially beneficial part of the natural cycle, while flood damages and fatalities are mostly a consequence of human folly. Cities must be built where wa-