Paul Ewald is a cancer researcher. He says we're entering a golden era in cancer treatment based on one emerging idea: most cancers are caused by viruses. It's good news, according to Ewald, who says we'll be able to treat cancer preventively, with vaccines. In this hour of To the Best of Our...Read more


Do you think your memory is a record of what actually happened? Chances are, it's not. New scientific findings show that with every act of remembering, our brains...

