Making science fun and providing an interactive platform for the public to engage and lean more, Chai and Why? is an effort by Tata Institute of Fundamental Research to decode science in daily life. "Science isn't limited only to what is in the textbook. It's all around us, and in Mumbai, what better than to talk about the science related to its local trains that are the lifeline of this city. From physics to social behaviour, so much can be seen when travelling in a local," says Arnab Bhattacharya from TIFR, who will be speaking at the discussion this weekend. The Mumbaikar has commuted by train since he was a child. "My real observations about science in trains were in the few years I went to school in Colaba while staying in Mulund. I was the curious kid who spent two hours every day in a train, taking in the sights and sounds, and asking questions. Although, I got the answers to those questions now," he adds.

Surendra Kulkarni (left) and Arnab Bhattacharya conduct fun science workshops with Chai and Why?