The Chipko movement was a non-violent movement in India in the 1970s that emphasized hugging trees to protect forests from being cut down. It began in the village of Reni in Uttarakhand when villagers, led by Gaura Devi, hugged trees to prevent them from being felled. The movement spread across India under environmentalists like Sunderlal Bahuguna and Chandi Prasad Bhatt, saving over a million trees from being cut down. Through non-violent protests and tree planting efforts, the Chipko movement brought attention to the importance of sustainably managing forests.