04:49 — Millions of Americans had an opportunity to learn about space, weather and the sun today as they witnessed a total solar eclipse. Dr. Janna Levin, pro (more…)
02:20 — The Doctors are joined by Tony, who suffers from painful keloids covering his face, plastic surgeon Dr. Lara Devgan and radiation oncologist Dr. Janna (more…)
A tell-all from Osama bin 'Laden's former mistress, more Green Screen Challenge and novelist Janna Levin in the studio tonight.
Stephen stumps Janna Levin -- a theoretical physicist -- by asking her the hardest question in the world.