Aug 14, 2013 — A technological revolution that is still playing out today began with new ideas about how atoms and subatomic particles work. Commentator Marcelo Gleiser tells the story of Danish physicist Niels Bohr and the work that changed how we live today.
Nov 21, 2012 — Theories are the life-blood of science; but ruling them out may be harder than you think. And letting a cherished model fall on the trash heap of history is even harder, yet. Take "supersymmetry" from the world of particle physics, for example. When might we see its demise or its vindication?