www.twitter.com/jaketapper (@jaketapper): Re US govt enabling of obesity, I refer u to "How to Get Fat Without Really Trying" by late great Peter Jennings > http://bit.ly/12vTgd
www.twitter.com/astro_tim( @astro_tim) Tweets in space: an Army Astronaut will tweet from the heavens.
www.twitter.com/charlesdaney (@charlesdaney) Grossed Out? You Might Be A Conservative! - http://bit.ly/hoXUJ
See also: Twitter 101 for health care journalists.
Marc Ambinder is a senior fellow at the USC Annenberg Center on Communication Leadership and Policy.