Feature image:
![](http://new.usgbc.org/sites/default/files/CCN%20USGBC.png?1360098104)
Today marks the start of the third Campus Conservation Nationals (CCN) - the largest nationwide electricity and water reduction competition on college and university campuses.
Today marks the start of the third Campus Conservation Nationals (CCN) - the largest nationwide electricity and water reduction competition on college and university campuses.