The Seven Principals of Leave No Trace. An excellent read as well as a good reminder for all of us that enjoy the outdoors.
From the Leave No Trace, Center For Outdoor Ethics website.. The Seven Principles of Leave No Trace provide an easily understood framework of minimum impact practices for anyone visiting the outdoors. Although Leave No Trace has its roots in backcountry settings, the Principles have been adapted so that they can be applied anywhere — from remote wilderness areas, to local parks and even in your own backyard. They also apply to almost every recreational activity. Each Principle covers a specific topic and provides detailed information for minimizing impacts.
To refresh yourself with the 7 Principals check out their page link below.