A science expo ‘Vigyaan Yatra – The Journey of Science’ organised by Chettinad Vidyashram, R. A. Puram will be held on Oct 3 at the school premises. Dr. A. Sivathanu Pillai, founder, BrahMos Aerospace and former chief controller (R&D), DRDO is the chief guest. Pradeep Kumar Srivastava, senior principal scientist, Central Drug Research Institute Lucknow is the guest of honour. At 8.45 a.m.