The environmental movement is a collective effort aimed at protecting the natural world and promoting sustainable practices. It began in the mid-20th century, gaining momentum with events like the first Earth Day in 1970. Activists advocate for issues such as pollution control, wildlife conservation, and climate change awareness. Various organizations, such as the Sierra Club and Greenpeace, play significant roles in this movement. They work to influence policies, raise public awareness, and encourage individuals to adopt eco-friendly habits. The movement seeks to create a healthier planet for current and future generations through education and activism.