David Lu is a co-founder and the CEO of Clarity Movement, an environmental tech startup focused on changing how we understand the environment by deploying dense air quality sensor networks for real-time air quality monitoring. He was recently recognized on the 2025 TIME100 Climate list for his work at Clarity. Prior to starting Clarity, David was a key leader in the University of California’s Fossil Fuel Divestment Campaign and worked alongside the Arctic Campaign Director at Greenpeace. Fueled by his everlasting passion for improving our environment, namely mitigating climate change, David believes in using data-driven approaches to address the issues arising in global environmental crises. David earned his BS in Atmospheric Science from the University of California, Berkeley.