It's hard to figure out what one person can do to prevent an overwhelming environmental problem, such as global warming. To help, UC Davis ecology graduate student Don Lotter has developed a computer program. Called EarthAware, it asks a person 116 questions about home energy and water use, transportation, shopping, waste and more. Each section of the interactive program also offers useful links to the World Wide Web. At the end of the hourlong evaluation, the computer spits out a seven-page printout. An overall score can range from Eco-Titan (superenvironmentalist) to Eco-Tyrannosaurus Rex (bound for extinction). The printout also suggests a few things a person might do to improve the score. The idea is not to inspire guilt but to build long-term awareness, says Lotter. The program grew from a class on the history of western consciousness and the environment that Lotter taught for 6 years at the UC Davis Experimental College. Lotter sells about one copy of the software each week. The EarthAware project temporarily derailed his doctoral research in agroecology, but he has licensed further software development to another business so that he can complete his studies. Lotter will speak about EarthAware as a dynamic approach to environmental education Dec. 27 at the Global Summit on Science and Science Education in San Francisco.