[Discover] Great Lakes Aquarium - Duluth, Minnesota http://www.glaquarium.org/
(aquarium minnesota duluth animals) 
[Discover] Tracking Stick - How to make and use one. http://www.bear-tracker.com/trackingstick.htm (tools technique nature animals)
[Discover] the Internet Bird Collection http://ibc.hbw.com/ibc/ (video nature green audio)
[Discover] Macaulay Library Catalog http://www.animalbehaviorarchive.org/loginPublic.do (audio media teacherresources sounds)
[Discover] Tracking Stick - How to make and use one. http://www.bear-tracker.com/trackingstick.htm (tools technique nature animals)
[Discover] the Internet Bird Collection http://ibc.hbw.com/ibc/ (video nature green audio)
[Discover] Macaulay Library Catalog http://www.animalbehaviorarchive.org/loginPublic.do (audio media teacherresources sounds)