From 1 to 4 p.m. Dec. 30, at the Tahoe Center for Environmental Sciences on the Sierra Nevada College Campus, fourth through sixth grade students are invited to conduct scientific experiments and figure out which suspect is responsible for poisoning water and wildlife. Through hands on activities, students will learn about environmental issues facing Lake Tahoe like water clarity, sediment run off, acid rain, wildlife populations, oil pollution, water pollution and environmental solutions. RSVPs required to attend to mjfarka@ucdavis.educ or call (775) 832-1673, ext. 7483.