You can access Nexis Uni here:

Helpful Information About Nexis Uni

For information on using and getting the most out of Nexis Uni, here are some helpful documents and information about Nexis Uni, provided by LexisNexis.

Another useful database for finding popular news publications is ProQuest Global Newsstream, which you can access here:

Here's a brief (minutes) demonstration of using ProQuest Global Newsstream: