By applying the latest mobile phone technology to K-12 participatory science, WildLab engages students in collaborative citizen science and encourages local environmental stewardship. Using GPS-enabled, internet-connected iPhones as data collection devices, WildLab allows students to report their scientific observations to each other and to the larger scientific community. In the classroom, students can send their data to sponsoring institutions for analysis, posit their own questions, and develop their own line of inquiry based on their field experiences.