Nicholas White and François Nosten have shown that drugs in combination with artemisinin are 90% effective at fighting the scourge of the world. So why isn't everyone using it? MERRILL GOOZNER travels to Thailand and China to watch Nosten and White at work.

MIT's ALEXANDER RICH who discovered RNA hybridization in 1956, describes what it has meant to biology. It all started, he says, when he used to walk into the basement of the Cal Tech chemistry department.

Gerd Maul, an unlikely vaccinologist, fights an unlikely foe. Join Alan Dove as he visits Maul's lab to find out why the scientist is trying to come up with a vaccine for a virus most people caught years ago and few will likely ever notice.

As the agency celebrates its 100th anniversary, what's next? TED AGRES finds out what Congress has in store. Plus, KEN KAITIN and CHRISTOPHER-PAUL MILNE present their wish list for the FDA.