Editor In Chief Jacob Ward On The April 2013 Issue Of Popular Science [Video] Why SpaceX's Falcon Heavy rocket made the cover. By Jacob Ward | Published Mar 11, 2013 8:08 PM Uncategorized Nick Kaloterakis SHARE Go here to read the April issue of Popular Science. April 2013 MORE TO READ RELATED How much exercise do I need to stay healthy? Reaping the health benefits of staying active might be simpler than you think. READ NOW RELATED Did food taste better 50 years ago? We can't go back in time, but some things have definitely changed. RELATED This protein may hold one of the secrets to predicting muscle growth There's surprisingly little research on how our bodies actually build muscle.