Video: The Poincare Conjecture
The century old mystery solved by Grigori Perelman, Russian mathematician who also refused to take the top math prize and $1M award for it. The Conjecture is explained well in this video.
More Mathematics Videos
Fractals in Science, Engineering and Finance, with Benoit B. Mandelbrot (2001)
Calculus: General Limit Rule
The Poincare Conjecture
The Klein Bottle
How to Turn a Sphere Inside Out