Explore the critical contributions of mathematics and computational science to addressing global challenges in this series of TED-style talks from the 2023 SIAM Conference on Computational Science and Engineering. Discover how mathematical models and computational methods are applied to understand climate change, energy systems, cosmic phenomena, and biological processes. Gain insights from renowned computational scientists as they discuss their work in areas such as climate modeling, energy grid optimization, astrophysics, and life sciences. Delve into the interdisciplinary nature of applied mathematics and its potential to solve complex real-world problems across various scientific domains.