This document describes a design sprint process to quickly design, prototype, and test ideas. It involves bringing together a diverse team to focus on a big challenge over 5 days. The process includes understanding the problem through expert interviews, sketching potential solutions, deciding on a solution to prototype, building a prototype, and validating it with user testing. Each stage of the sprint is briefly outlined, from understanding the problem through brainstorming potential solutions ("How might we" questions), deciding on a solution to focus on, prototyping it, and getting user feedback before wrapping up. An example sprint topic given is addressing India's air pollution problem.