What action did John Muir take that brought about green awareness?

John Muir was a pioneering naturalist and environmentalist whose advocacy for the preservation of wilderness significantly raised public awareness about the importance of nature. He co-founded the Sierra Club in 1892, which played a crucial role in the conservation movement and the establishment of national parks. Muir's writings and lectures emphasized the spiritual and ecological value of nature, inspiring many to appreciate and protect the environment. His efforts helped to galvanize a broader movement for environmental conservation in the United States.