Summary: Humans have been sending radio signals out to the universe for years, and so far we've received no answer. But what would we do if we did? And how on Earth (or anywhere else, for that matter) do you encode digital images into DNA? All of this and more from Popular Science! | <a href="http://ern-wp-content.s3.amazonaws.com/wp-content/uploads/2016/06/PS_062516.mp3" target="_blank">Download Full Episode #318</a>
