If you missed the Bill & Melinda Gates Foundation web-cast with Diane Sawyer you can read the web-cast at this link.
This web cast talks about the extraordinary progress in the fight to eradicate polio and the enormous lifesaving potential of vaccines. The global immunization effort has reduced polio by 99%. In the web-cast, Bill Gates, co-chair of the Gates Foundation, joins global leaders to discuss what the past can reach us about protecting children around the world from polio and other vaccine-preventable disease. The event was moderated by ABC World News anchor Diane Sawyer.