Marta Zaraska is a Polish Canadian science journalist based in France. She has written for The Washington Post, Scientific American, New Scientist, The Atlantic, Discover, and other outlets. Her book Meathooked delves into humanity’s longstanding obsession with meat and Growing Young explores the research linking optimism, kindness, and strong social networks to greater longevity. Follow her on Twitter @mzaraska and Instagram @mzaraska.