• Submit Earth, Atmospheric, and Planetary Sciences Papers
  • Science Sessions: The PNAS Podcast Program

Frequently Asked Questions about Institutional Subscriptions

1. Can my institution subscribe for both print issues and online access?

Starting January 2015, print subscriptions will be discontinued and all PNAS subscriptions will be online-only.

2. My institution has a paid subscription to PNAS Online, but I'm not able to see the full text of articles. I'm prompted for a username and password. Why?

When this happens, the IP address for your machine is not being recognized by our computer. This failure is caused by one of three things:

  • Your Institutional online subscription has not yet been activated.
  • The person who "activated" the online subscription did not enter all needed IP addresses for your institution.
  • The person who "activated" the online subscription did not realize that some subnets of your institution are routed through a proxy server.

3. What should I do?

Send us feedback so we can diagnose the problem. Let your librarian know you are having trouble with access.

4. Who from my institution can access PNAS Online?

An online subscription permits unlimited simultaneous Internet access to PNAS Online by authorized users generally at one location (the employees, faculty, staff, and students officially associated with the subscriber, and authorized patrons of the subscriber's library facilities that are administered from the subscriber's site or campus) through the use of the institution's IP address. Authenticated and authorized users may access PNAS Online from other locations (e.g., through dial-in, telnet, etc.).

5. What is an "institution"?

Institutional online subscriptions generally provide access to PNAS Online from an institution in one geographic location and do not permit remote campuses, remote sites, consortia, or other forms of subscription sharing. For the most part, an Institutional online subscription authorizes use at a localized site. A "site" is an organizational unit, and may be academic or nonacademic. For organizations located in more than one city, each city office is considered a different site. For organizations within the same city that are administered independently, each office is considered a different site.

For example, each campus in the State University of New York system is considered a different site, and each branch or office of Upjohn Laboratories is considered a different site.

6. How does this work?

When someone tries to access PNAS Online, our server checks to see if the requesting computer is within the list of Internet IP addresses provided by a subscribing institution. If it is, the user will be able to use all those services enabled for Institutional online subscribers. For Institutional online subscribers, there are no user names or passwords to remember, and there is no limit on the number of users from your institution who may access PNAS Online simultaneously.

7. How can I tell if my institution has subscribed to PNAS Online?

If your institution has purchased and activated a subscription to PNAS Online, you will automatically have access to the entire site without having to sign in. You will see a button at the top of each page confirming that you are accessing PNAS Online through an Institutional subscription. If you are not sure if you have an Institutional subscription to PNAS Online or would like your institution to subscribe, contact your local librarian.

Recommend PNAS to Your Librarian

8. If our PNAS Online subscription expires and at some later date we reinstate our subscription, will we then have access to all available years of the electronic edition?

Yes, while you have a paid and activated subscription to PNAS Online, you will have access to all of the content in the electronic database. When your subscription expires, you will still have access to free back issues (PNAS content is free after 6 months).

9. Still have questions?

For further information, please contact:

PNAS Subscriptions
500 Fifth Street, NW
NAS 340
Washington, DC 20001 USA
Phone: 202-334-2679
Fax: 202-334-2739
Email: PNASsubsdept{at}nas.edu


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