What factors increased Americans concerns about environmental issues during the 1900s?

During the 1900s, several factors heightened Americans' concerns about environmental issues, including rapid industrialization, urbanization, and the visible degradation of Natural Resources. The rise of pollution in cities, coupled with events like the Dust Bowl, underscored the impact of human activity on the environment. Additionally, the publication of influential works like Rachel Carson's "Silent Spring" in the 1960s raised awareness about the dangers of pesticides and environmental toxins. This growing awareness ultimately led to the establishment of environmental regulations and the conservation movement.