Project Chariot, one of the first planned nuclear excavation experiments of the Atomic Energy Commission’s Plowshare program, touched off a controversy over its safety that drew in two prominent American biologists, Paul Sears and Barry Commoner, both now known mainly for their roles as environmental advocates. However, Sears, the ecologist and well-established conservationist, supported Project Chariot and the Plowshare program in general, while Commoner, unacquainted with ecology at the time, strongly opposed it. A close study of their different responses to (...) this project provides insights into the tensions and pressures on scientists during this critical period of the Cold War, 1960–1961, when fear of nuclear war and concerns over radioactive fallout from bomb tests mixed with hopes for peaceful applications of nuclear energy and the environmental movement had not yet begun. For Sears, the close connections in the United States between the science of ecology and the Atomic Energy Commission may well have played a significant role in his support for Chariot, while for Commoner, Project Chariot turned out to be his epiphany moment, the incident that transformed him from an antinuclear activist into an environmentalist. (shrink)

One of the most influential research and teaching programs to emerge in the new science of ecology in the early twentieth century was that which developed at the University of Chicago under the direction of botanist Henry Chandler Cowles. Not a prolific writer, Cowles was nevertheless author of two of the seminal papers in American plant ecology. On the basis of those early contributions, as well as his considerable abilities as field guide, he was able to draw numerous students into (...) Chicago’s new plant ecology program for both introductory and advanced work. No small part of the attraction of the program was Cowles’s ability to interpret successional changes in vegetation in terms that fitted in well with the forward-looking, reform-minded mood of the educated elite of the nation and the city of Chicago during the early decades of the century. Cowles’s favorite outdoor laboratory, the region of sand dunes along the Indiana shore of Lake Michigan, provided the ideal setting for his vivid telling and retelling of the story of the struggles and transformations of plant communities toward the establishment of the inevitable climax community. Both this dramatic tale of progressive change and the unusual diversity of species and communities at the dunes reflected qualities of Chicago itself, and Cowles interpreted these ecological phenomena in a manner that bore a striking resemblance to the frontier hypothesis of Frederick Jackson Turner. (shrink)

The 1918 discovery of oil in the bed of the Red River, which forms the border between Texas and Oklahoma, led to a U.S. Supreme Court case that involved the extensive use of expert witnesses in fields such as geology, geography, and ecology. What began as a dispute between the two states soon became a multisided controversy involving those states, the federal government, Native Americans, and individual placer‐mining claimants. After the federal attorneys introduced scientific experts into the dispute, including the (...) plant ecologist Henry Chandler Cowles and the geographer Isaiah Bowman, fresh from negotiations at the Paris Peace Conference, Texas attorneys fielded their own team of opposing experts. Charged with the task of determining the location of the border, defined as the south bank of the river at the time of the 1819 treaty with Spain, the scientific experts presented the court with volumes of evidence and elaborate arguments, much of it contradictory and involving creative interpretations of existing theories. The case exhibited all the now‐familiar features of a trial using expert witnesses, for which it represents an early, overlooked, and particularly complex example. (shrink)