Dr Sudhir Annasaheb Kumbhar, a science teacher from Karad, Maharashtra has been making hand-drawn weekly wallpapers on environmental issues titled Nisargdnyan since Jan 7, 1998. Since then, he has made 682 wallpapers using pictures, photos of plants, animals – all related to the nature. He has also held exhibitions of posters at 500 schools, 90 colleges and 150 nature awareness camps.