Did you know that the U.S. government is the largest collector of stastics in the world? Here are some good places to start when searching for various statistics.
ScienceEducation.gov is a web-based gateway unifying thousands of Federal science, technology, engineering and mathematics (STEM) education resources. Users can access Federal STEM education resources from a single query, tag, comment, and rate material using social networking capabilities. In addition, all resources are automatically tagged by average grade level. Content includes lesson plans, curricula, classroom activities, homework help and information relating to professional development.
WorldWideScience.org is a global science gateway comprised of national and international scientific databases and portals. WorldWideScience.org accelerates scientific discovery and progress by providing one-stop searching of databases from around the world. Multilingual WorldWideScience.orgBETA provides real-time searching and translation of globally-dispersed multilingual scientific literature