Cool Science Radio | September 18, 2025

Scientific American senior editor Jen Schwartz discusses “Upended,” a new collection marking the magazine’s 180th anniversary. The series highlights moments when science reversed itself, from the promise of plastic to debates over life in the universe. Then, mathematician and author Eugenia Cheng explains why equality is never as absolute as it seems, not even in math, and how rethinking sameness can transform the way we approach fairness in everyday life.