77-year-old Vaijinath Ghongade, from Solapur district in Maharashtra, couldn't bear to see the sorry state of the once thriving Manganga river. Here's how he brought people together to revive it.
Bengaluru's Sia Godika won the $400,000 Breakthrough Junior Challenge prize organised by tech giants like Google and Facebook for her video on reversing cellular ageing. Watch it here.
Dhruvang Hingmire and Priyanka Gunjikar, architects of 'Building in Mud', create cement-free, eco-friendly homes that stay cool, using natural materials and lime plaster.