LUCKNOW, April 28 -- From a smart travelling assistant for the visually impaired to solar-powered tricycle for the specially-abled and gas leakage detection system, a lot many innovative models showcasing the creativity of students of different universities and colleges were on display at the exhibition organised by the innovation cell of the Council of Science & Technology (CST), under the CST UP Engineering Project Grant Scheme 2023-24, at the Indira Gandhi Planetarium, Vigyan Bhawan here on Saturday....