The influential 20th-century environmentalist known for writing "Silent Spring" was Rachel Carson. Published in 1962, the book raised awareness about the dangers of pesticides and their effects on the environment, particularly on birds. Carson's meticulous research alerted the public and policymakers to the interconnectedness of ecosystems and human health. Her work is credited with launching the modern environmental movement and led to increased regulatory scrutiny of chemicals, ultimately contributing to the establishment of the Environmental Protection Agency in the United States. Carson’s advocacy for environmental awareness remains influential today.