Here is a quote from the Teaneck Creek Conservancy that I believe Read-about-it: International Science Literacy and Science Education readers will enjoy because it shows people taking action to preserve the environment.
Weed Warriors: Work alone or in a group and help the Conservancy maintain a invasive-free buffer zone on either side of its trails. Groups meet and work together on Wednesdays and Sunday mornings.
Source: http://www.teaneckcreek.blogspot.com/ [Note: There are nice photographs on the Teaneck Creek Conservancy's blog.}
Fight invasive species.
Enjoy the biology of the region.
What are you doing to give back to the environment? What parks and conservancies in your area need volunteers to fight invasive species among other tasks?
Please share your experiences at this conservancy and/or at parks and conservancies near you.