Explore the story behind Einstein's legendary equation E=mc² in this fascinating episode of Albert Einstein. Dr Sarah Quinn breaks down the true meaning of mass-energy equivalence and explains how this simple formula revolutionized our understanding of the universe. Discover why even tiny amounts of matter contain enormous energy, how stars use this principle to shine for billions of years, and why nothing with mass can travel at light speed. Learn about the equation's unexpected origins as an afterthought in Einstein's 1905 paper on special relativity, and explore its modern applications from nuclear power to GPS satellites. The episode examines how Einstein derived this world-changing insight through pure mathematical reasoning, connecting the microscopic quantum world to cosmic-scale phenomena. Perfect for science enthusiasts wanting to understand one of physics' most important discoveries. Keywords: Einstein, E=mc2, mass energy equivalence, special relativity, nuclear physics, cosmology, speed of light, scientific discoveries, physics education, Albert Einstein podcast, Dr Sarah Quinn, science history, quantum mechanics, stellar fusion, relativity theory.