Environmental groups grew to millions of members during the 1970s

Evidence

Environmental nongovernmental organizations grew dramatically both in size and in influence during the 1970s. This included decade-long increases of membership in existing groups such as the Sierra Club (from 113,000 to 165,000 members), the National Wildlife Federation (from 540,000 to 811,000 members), and the National Audubon Society (from 120,000 to 400,000 members), as well as the creation of new organizations ranging from such smaller, national groups as the Environmental Defense Fund and Natural Resources Defense Council to more grassroots organizations such as Greenpeace and Friends of the Earth. — Richard J. Lazarus, The Making of Environmental Law, 385

Categorization

• XREF: connects to: Environmental law’s sudden 1970s eruption masked decades of slowly building public concern. — Richard J. Lazarus, The Making of Environmental Law, 264; Grassroots environmentalism grew through local groups led by women and minorities — Richard J. Lazarus, The Making of Environmental Law, 549; US group life collapsed in the 1970s even as issue variety grew — Anton Jäger, Hyperpolitics: Extreme Politicization…, 132 (+1 more)

Broader Connections

• Grassroots environmentalism grew through local groups led by women and minorities #expands (0.75) — Richard J. Lazarus, The Making of Environmental Law, 549
• US group life collapsed in the 1970s even as issue variety grew #qualifies (0.72) — Anton Jäger, Hyperpolitics, 132