Scientists are investigating the unique geology of Mount Rainier, an active volcano in Washington state. Mount Rainier National Park has the most glaciated peak in the mainland United States, and its combination of massive ice forms and volcanic conditions creates an interesting environment for ecological study. Isabelle Cordova and her classmates at the Health and Science School in Beaverton, Oregon, report on how scientists are investigating microbial life at the volcano and the possibility of such life existing on other planets.