Frequently Asked Questions
Why am I seeing a paywall?
Please make sure you are signed in to scientificamerican.com.
Users of scientificamerican.com need a subscription to get access to our articles. If you are not a paid subscriber you may be offered a limited number of articles to view, and you may be offered limited additional content if you sign up for our newsletters. With a subscription, you will receive online access to the issues as well as news, videos, opinion articles and podcasts.
To learn more about our subscriptions, click here.
Please email us if you have questions or feedback.
What browsers are best for using ScientificAmerican.com?
We support the latest operating systems, and the latest versions of the following browsers, set to accept all cookies:
Chrome/Mobile Chrome
Firefox
Safari/Mobile Safari
Android
Microsoft Edge
I'm having trouble signing in. What do I do?
Please keep your browser and operating system up-to-date for the best experience using ScientificAmerican.com. If you receive an error signing in, first perform a sign out from ScientificAmerican.com, then restart your browser.
We also recommend clearing your browser's history and cache if you experience further difficulty. Of course you can always email us if you need further help.
Where can I leave a comment?
Scientific American welcomes your feedback! Follow us on Twitter, Facebook, Instagram, LinkedIn and YouTube to comment on articles, news and videos. Where a comments forum is offered, we ask that you follow our Community Guidelines.
Scientific American reserves the right to delete comments and revoke commenting privileges from the site and social media pages without notice.
Letters to the Editor can be sent in an email, or to the following address:
Scientific American
Letters to the Editor
1 New York Plaza
Suite 4500
New York, NY 10004