In 1933 a farmer named Ed Carlson walked into a laboratory at the University of Wisconsin and asked a simple question- what was killing his cattle? The answer to that question would earn the university millions of dollars, and revolutionize the fields of both medicine and vermin extermination. The strange story of warfarin deserves to be remembered.
In 1938, the Chinese would make a decision they had made before in times of invasion and desperation: the destruction of dykes to flood huge sections of the country.