 New Click and Learn: Geological History of O2 Early Earth’s atmosphere lacked oxygen gas, yet the planet was teeming with microbes! Explore how changes in O2 levels throughout Earth history have impacted life on our planet with this new interactive Click and Learn,Geological History of O2. |  Paleoclimate: A History of Change Learn about climate change past and present in this new Click and Learn, Paleoclimate: A History of Change. You will see firsthand how the history of Earth's climate over millions of years has shed light on the causes, implications, and severity of current climate change. |  2012 Holiday Lectures Videos and Animations
Explore our 2012 Holiday Lectures! Learn about greenhouse gases, the geologic carbon cycle, and Earth history with our new animations. Investigate plate tectonic theory and enjoy extended interviews of our lecturers with our video clips.
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 Using Genetic Crosses to Analyze a Stickleback Trait In this hands-on activity, students apply the principles of Mendelian genetics to analyze the results of genetic crosses between stickleback fish with different traits. Students use photos of actual research specimens to obtain their data. They then analyze their results along with additional data from the scientific literature. |  Teach Gene Regulation with a Hands-on Activity The activity, Modeling Regulatory Switches, guides students through the steps of interpreting molecular diagrams and of building physical models of eukaryotic gene regulation. Use this activity in conjunction with the short film, The Making of the Fittest: Evolving Switches, Evolving Bodies |  EarthViewer Data Files Now Available Examine the raw data used to create the charts included in our popular EarthViewer app. Millions of years’ worth of data are available for carbon dioxide concentrations, temperature, biodiversity, and more. Have your students plot their own charts and graphs! |
