John Muir, who helped found the Sierra Club, is best known for advocating what approach to wild land?

Gifford Pinchot's conservation philosophy called for natural resources to be managed in what way?

Aldo Leopold is most associated with which environmental idea?

In Silent Spring, Rachel Carson brought public attention to the ecological harm caused by which chemical?

Thomas Malthus argued that, without limits, human population could grow faster than what resource?

Garrett Hardin used the phrase “tragedy of the commons” to describe what problem?

Norman Borlaug's work helped launch the Green Revolution primarily through what innovation?

Wangari Maathai founded Kenya's Green Belt Movement, which organized communities around what activity?

Jane Goodall changed scientists' understanding of chimpanzees through long-term field research showing that they do what?

Chico Mendes organized Brazilian rubber tappers and campaigned against what threat in the Amazon?

Which book brought the effects of DDT and other pesticides on birds to a wide public audience in 1962?

Which book presented Aldo Leopold's land ethic and argued that humans are members of an ecological community?

Which book by Paul Ehrlich warned that rapid population growth could intensify pressure on resources?

Which report defined sustainable development as meeting present needs without compromising future generations' ability to meet theirs?

Which book used computer models to explore how exponential growth could encounter finite global resources?

George Perkins Marsh warned that deforestation and land misuse could alter environments in which landmark book?

Which book by E. F. Schumacher argued for human-scale economics and appropriate technology?

Barry Commoner's The Closing Circle argued that environmental problems are strongly connected to what?

What combination caused the Dust Bowl's severe wind erosion on the southern Great Plains during the 1930s?

Minamata disease in Japan resulted from industrial discharge of which pollutant into Minamata Bay?

The 1984 Bhopal disaster occurred after water entered a tank containing methyl isocyanate and triggered what?

Why did the Cuyahoga River catch fire in 1969?

What caused toxic chemicals to emerge around the Love Canal neighborhood in New York?

What was the principal cause of the Aral Sea's dramatic shrinkage?

What immediate event caused the Exxon Valdez oil spill in Alaska in 1989?

The Deepwater Horizon disaster began when what failed during drilling of the Macondo well?

What combination produced London's Great Smog of 1952?

The Chernobyl nuclear disaster was caused by an unsafe reactor test combined with what additional factor?

Why did lead concentrations rise in Flint, Michigan drinking water after the city changed water sources in 2014?

What human activity is the main driver of the Gulf of Mexico seasonal dead zone?

What followed the Dust Bowl and helped farmers reduce soil erosion through improved land-management practices?

Public reaction to the 1969 Cuyahoga River fire helped build support for what federal change?

What federal law created the Superfund program after the Love Canal hazardous-waste crisis?

What U.S. law followed the Exxon Valdez spill and strengthened oil-spill prevention and response requirements?

The Bhopal disaster helped spur which 1986 U.S. law requiring facilities to report the hazardous chemicals they store and release?

What British law followed the Great Smog of 1952 and restricted smoke pollution from coal burning?

Which agreement, adopted after Chernobyl, requires a country to promptly warn others about a nuclear accident that could release radiation across borders?

After the 1979 Three Mile Island accident, U.S. nuclear plants faced stronger requirements in what area?

What law directed many civil penalties from the Deepwater Horizon spill toward Gulf Coast ecosystem recovery and economic rebuilding?

What Japanese institution was established after the Fukushima Daiichi accident to strengthen independent nuclear-safety oversight?