Key Figure in American Environmentalism

Beginning in the 1980s, the United States witnessed a significant increase in environmental awareness, leading to the establishment of various movements and policies aimed at protecting the environment. One notable event reflecting this growing concern occurred in 1988 when a prominent scientist testified before Congress about global warming and its potential impacts. This event marked a pivotal moment in American environmental policy.

Within this context, which of the following individuals was instrumental in bringing the issue of climate change to the forefront of national debate?