How to Register

Accounts for PPX and are tied together into a single login. This way, as well as playing PPX, you can also comment on, rate, save and share all your favorite PopSci articles.

If you already have an account on, log in and click the “Your Profile” link below your name to the left of the logo. After clicking the “Edit” tab, check the box marked “Please register me for a FREE account on the PopSci Predictions Exchange” and then click the “Submit” button at the bottom of the page.

If you don’t have a account, simply create one at, making sure to check the same “Register me for a PPX account” box.