Started on August 7 last year, Green Bappa is a page on Facebook where a group of nature lovers from Navi Mumbai are promoting eco-friendly means of celebrating Ganeshotsav.

True colours: Plaster of Paris idols take several months to years to fully dissolve when immersed into water. In addition, when chemical paints are used to decorate the idols, heavy metals such as mercury and lead seep into the water. File pic