<span style="color: #222222;">Union minister for science and technology Dr Harsh Vardhan calls  Indian International Science Festival (IISF) , Lucknow most successful and world's biggest India International Science Festival. He said  this festival has broken all old records. </span><br />'' <br />'' <span style="color: #222222;">AIR correspondent reports that in festival students made two world records by isolating DNA of banana and Taking training of First Aid. The minister appealed people to utilise the opportunity.</span><br />