The leaders of the United States, Russia, the United Kingdom, France and China (the P5 Permanent members of the UN Security Council) will meet in Paris from 29 to 30 June 2011 to discuss nuclear security. Together they possess more than 20,000 nuclear weapons, capable of destroying all life on earth many times over.

Check out this fascinating talk by Robert Fuller, former president of Oberlin College and author of Somebodies and Nobodies: Overcoming the Abuse of Rank, at this TEDx event in Berkeley California.