Meet Dr. Vi Rapp. She is a research scientist at Lawrence Berkeley National Laboratory. She has a Ph.D. in mechanical engineering and focuses her research on improving combustion and combustion systems. As part of her job she is working on designing a cleaner, more efficient cookstove. This Career Spotlight video is part of our Engineering Is: Saving the World with Cookstoves e-book, which tells the story of how Professor Ashok Gadgil and his team at Lawrence Berkeley National Laboratory designed a cookstove to help internally displaced persons in Darfur. The e-book includes videos, interactives and text that explore the science and engineering principles behind this project. Find all of our e-books @ kqed.org/ebooks.