Seventeen-year-old Siddhant Sinha was alarmed when he realised how much carbon dioxide his Delhi school, which ran on diesel generators, was emitting. He set up Sun Foundation soon after to help install solar rooftop panels at educational institutes in India, and to educate students about climate change. Listen to him talk about what it takes to convince schools to switch to solar, the solar clinics he runs, future plans, funding and more on this week's episode