After they were added to Zinc, some articles have been placed behind a paywall. Due to requests, we have continued to make these articles and quizzes available for teachers who use them in class. Please note, all new articles on Zinc will be freely accessible to all users. Lift Off will not include known paywalled articled.

If an article on Zinc is behind any kind of paywall, it will include a note on the article's assignment page. Please let us know if you come upon an article on Zinc that is missing the paywall warning.

If you would like to avoid all paywalled articles when browsing Zinc, please click on the "Hide paywalled articled" switch on the Article page. This will prevent paywalled articles from showing up when you search or sort to create articles assignments.

If ever experience any issues with accessing Zinc articles, please contact Zinc Support by clicking the blue circle and speech bubble in the bottom-right corner of your Zinc screen.