Science city Chennai conducted the Chennai science festival in 2019, in B.M. Birla Planetarium from 19 Feb 2019 to 22 Feb 2019. The science festival was inaugurated by the IAS officer U.Sagayam. Thirty different schools from different parts of the Tamil Nadu division participatedin the comptetition. D prem and M Tamilelelan of class VIII -A from Chennai public school, Thirumazhisai presented their start up idea of reducing carbon dioxide from vehicle exhaust. Their demonstration had grand welcome and drew attention of the chief guest and other exhibitor.