Overview: H1N1 - Scott Pelley reports on the H1N1 flu - which is increasingly targeting young, healthy people - and how the government plans to fight the flu pandemic. Michael Radutzky, David Gelber and Sam Hornblower are the producers. THE KANZIUS MACHINE - John Kanzius fought his leukemia head on, inventing a machine that may someday offer effective treatment for cancers without the debilitating side effects of radiation and chemotherapy. Lesley Stahl reports. Tanya Simon is the producer. DREW BARRYMORE - The remarkable former child star, actress and now director is profiled by CNN's Anderson Cooper. John Hamlin is the producer.