Because of today’s forced spending cuts, the National Park Service is faced with funding cuts of $100 million dollars. This will most likely be seen through reductions in visitor access, park facility hours, resource management and staffing (save the park rangers!)
The best way to help out is to make a donation through the National Park Foundation, the official charity of the National Park Service. All funds are invested directly into the park system. The Foundation’s three areas of focus are conservation & preservation, education, and community engagement. They might also give you some pretty nice return address mailing labels when you become a member.