Science lessons can encourage students to view data with a scientists' skeptical eye--especially now that so much unrefereed information is online, in advertising, and in other media sources. In developing the skills of media literacy as part of science studies, students learn to dissect advertisements and other more subtle media messages to discern bias and hidden meanings. Therefore, The Key Media Literacy Questions (Thier and Davis 2002) and Media-analysis activities described in this article can help students develop a healthy skepticism of media and hone their critical-thinking skills. (Contains 6 resources.)