Girl students from Karnataka who had recently won the first prize in the Techno-Challenge 2015 in the US called on Prime Minister Narendra Modi today. The students, inspired by Prime Minister's Swachh Bharat initiative, have developed a mobile app which connects buyers and sellers of waste. Mr Modi wished the students well for their future endeavours. Union Minister Ananth Kumar, and Member of Parliament Prahlad Joshi were also present on the occasion.