Imagine a future with plentiful clean-energy harvesting to phase out fossil fuels, chemical manufacturing that does not emit harmful pollutants or produce wasteful byproducts, point-of-care diagnostics and sensors, and computers that operate at light speed and consume little energy. Advances in nanophotonics are poised to usher in that future. In this webinar, we describe the underlying physics and several emerging applications. Originally aired May 2024.