Earth Day, also known as the International Mother Earth Day, is celebrated annually on April 22. The day is observed to spread awareness about several issues affecting the environment including the widespread increase in pollution, global warming, and deforestation. Bollywood celebs took to social media to raise awareness. Anushka Sharma shared an Earth Day postcard that read, \"Our home...Our planet...Our responsibility.” Mouni Roy shared some mesmerising pictures featuring the beaches, hills & snow-capped mountains. Nimrat Kaur posted some refreshing pictures on social media. Dia Mirza, Pragya Kapoor and Manish Paul joined hands to clean the beach on Earth Day. Watch the video to know more.