On this episode of Last Week in Tech, the team: -dives deep into how the Apple Watch is evolving into a legitimate medical device, and its potential future impacts (http://pops.ci/GPHQPK) -answers your questions, including whether you should upgrade your smart devices like iPhones and fitness trackers (http://pops.ci/MGonL9) -and explain how designers cope with ever-changing iPhone screens (http://pops.ci/4oMVQK). Email us questions, suggestions, or unabashed compliments at [email protected] or tweet us at www.twitter.com/LastWeekInTech. For all the stories we discussed and more, head to pops.ci/lwit. For all of Popular Science's technology stories, head to www.popsci.com/technology. Our team: Corinne Iozzio (www.twitter.com/corinneiozo) Claire Maldarelli (www.twitter.com/camaldarelli) Stan Horaczek (www.twitter.com/stanhoraczek) Rob Verger (www.twitter.com/robverger) Eleanor Cummins (www.twitter.com/elliepses) Music by: Billy Cadden (www.twitter.com/billycadden) Edited by: Jason Lederman (www.twitter.com/lederman)