Though many states are still buried deep in snow, there are many more than are experiencing the warmer weather of spring time. With such nice weather, there is no excuse not to get out of the house and enjoy nature. This week is National Park Week and to celebrate over 300 national parks are offering free admission as well as special events and programs for the kids. It only runs through Sunday so make plans to take part. For more information and to take advantage of this offer visit the ChicagoSunTimes.com.