DU college's principal coats classroom walls with cow dung, calls it part of research

The principal of Delhi University's Laxmibai College, Pratyush Vatsala, was seen coating the walls of a classroom with cow dung. Vatsala told PTI that the act was part of an ongoing research. She reportedly shared the video herself in the college's teachers' group, saying that indigenous methods are being adopted to cool classrooms.