From the National Park Service comes the Teachers Corner Web site on Badlands National Park. The lesson plans offered include erosion in a box, understanding rock layers, making dirt, muddying the waters, and more. Each lesson page gives a suggested grade range, key concepts, background, materials, procedure, results, and a why section that explains the scientific reasons behind the results. The...

Philip W. Stoffer and USGS colleagues wrote this report (.pdf format) on the marine K-T boundary interval that occurs throughout the Badlands National Park region of South Dakota. Data from marine sediments (supported by paleontological correlation, sequence stratigraphy, magnetostratigraphy, and strontium isotope geochronology) suggest that several asteroid impacts may be preserved in the...