America's National Parks are protected places and have become living museums for as many as 270 million visitors per year! In addition, researchers are able to perform long term studies of a wide number of subjects from salamanders the size of thumbnails to gigantic geothermal geysers. These parks are natural laboratories for scientists. Did you know that Yellowstone National Park in Wyoming sits on top of an active (and very large) volcano? This volcano is monitored and studied on a daily basis, not only as a means of protection (though it seems a long way off from erupting) but also as a way of understanding how the environment changes and influences what goes on deep underground. The scientists profiled in 'The Park Scientists' also study grizzly bears in Yellowstone, the majestic Sagauro catci in Arizona, and fireflies in Tennessee -- and suggest many ways for the average reader of any age to help out. The emphasis here is twofold: the great science that happens every day in these important, protected spaces, and the fact that you can visit all of them and participate in the research. It's backyard science at its biggest and best in this latest resourceful addition to the 'Scientists in the Field series! AGES: 10-14 AUTHOR: Mary Kay Carson began her writing career working on the classroom magazine SuperScience at Scholastic, Inc. in New York City in 1991. She has been a fulltime freelance writer for the past dozen years and is now the author of dozens of books for kids and teachers about space, weather, nature, and other science and social studies topics. Tom Uhlman has been a freelance photographer for 25 years. He photographs lot of news and sporting events, but enjoys shooting pictures of wildlife and the natural world most of all. Tom's photographs can also be seen in other 'Scientists in the Field' books 'Eruption', 'Emi and the Rhino Scientist', and 'The Bat Scientists'. Colour illustrations