To change your subscription address for Popular Science Magazine, you will typically need to visit the official website. There, you can find a section dedicated to subscriptions or account management. In most cases, you will be required to log in to your account with your subscriber details. Once logged in, look for an option to update your personal information or change your address. It is advisable to have your subscription details handy for verification purposes. If you prefer to handle this over the phone, you may find contact information on the website where customer service representatives can assist you directly. It is important to make the change well in advance of your next issue to ensure that your magazine is delivered to the correct location.