Delhi teen builds ₹140 tech that turns ordinary fans into air purifiers, wins Diana Award

Delhi-based Class 12 student Krish Aggarwal has won the 2026 Diana Award for developing a ₹140 technology with Class 11 student Samarth Meattle that can turn ordinary fans into air purifiers. Their tech, named Project Vayu, aims to make air purification more accessible in classrooms. Project Vayu has copyrighted the design and doesn’t charge for distributing purifiers to schools.