Geo answer
The answer to our Geo Quiz today is Nancy, France, birthplace of French mathematician Henri Poincare. Poincare posed a mathematical problem known as the Poincare Conjecture. Now a mysterious Russian mathematician has solved it. Anchor Marco Werman finds out morefrom Saint Petersburg Times reporter Galina Stolyarova.
Tell us about your experience accessing The World
We want to hear your feedback so we can keep improving our website, theworld.org. Please fill out this quick survey and let us know your thoughts (your answers will be anonymous). Thanks for your time!