Dave Grohl only spent three and a half years drumming for Nirvana — but he says it felt like a lifetime. The Foo Fighters frontman talks about his new memoir, "The Storyteller." And, Mosquirix is the first vaccine to treat malaria and the first developed to treat any parasitic disease. World Health Organization malaria expert Dr. Mary Hamel and Dr. Kwame Amponsa-Achiano of Ghana's Health Service join us to discuss the breakthrough treatment.