From the icy Cold Desert of Himachal Pradesh to the green Nilgiri hills and the mangroves of the Sundarbans, India’s 18 Biosphere Reserves protect some of the most unique and fragile ecosystems on Earth.  Each reserve helps preserve rare wildlife, plants, and landscapes. On this International Day for Biosphere Reserves, let’s celebrate these living treasures that remind us how rich and diverse India’s nature truly is.