How can Sonam Wangchuk's latest innovation clear Delhi's toxic air?

Sonam Wangchuk is now a familiar name in India, thanks to his now resounding voice on climate change and innovations in the cold mountains. His latest one is a carbon-neutral solar building that stays warm even in freezing conditions and can help clean the toxic air of Delhi and NCR. Business Standard's Nazia Iqbal catch-up with him in Ladakh on that and more. Listen in