Cool Science Radio speaks with Gemma Tarlach, Senior Editor of Discover Magazine . Gemma joined the show last year to talk about Discover’s September/October cover story on The Science of Gun Violence . It was an eye-opening conversation that you can listen to here . Gemma is back, this time to discuss the most important science stories of the previous year and their potential impact into the future. The Science That Matters 2020 has just hit the newsstands and it covers the top 50 stories on