Northern Arizona University again has been recognized for its commitment to sustainable practices, earning a place in the Princeton Review’s Guide to 311 Green Colleges.

The Princeton Review cited the university’s commitment to “green” buildings, four of which have been awarded ratings in accordance with the U.S. Green Building Council‘s Leadership Energy and Environment Design building rating system. The guide singles out NAU’s Applied Research and Development building for its “Platinum” status, making it the greenest building in Arizona and one of the three greenest buildings in the world.

The publication also cited the university’s numerous initiatives to create a carbon-neutral campus by 2020.

The Princeton Review partnered with the U.S. Green Building Council to produce the guide and considered each institution’s commitment to sustainability by evaluating LEED building ratings; environmental literacy programs; formal sustainability committees; use of renewable energy resources; and recycling and conservation programs.

To read details or download the free guide visit princetonreview.com/green-guide.aspx.