Podcast: Happiness After Age 50, What Terrifies Mice, and More By David Grimm, Robert FrederickMay. 21, 2010 , 5:22 PM Does life get better after age 50? Are mice hardwired to fear predators? Science's Online News Editor David Grimm chats about these stories and more with Science podcast host Robert Frederick. Listen to the ScienceNOW podcast (or listen to the full Science podcast.) Listen to more podcasts.