Credits:
Animations
| • | Stephen Marshak, University of Illinois, Urbana Champaign, with Precision Graphics |
| • | Declan DePaor, Boston University and ScienceProf.com |
Overviews, Self-Tests and Crossword Puzzles
| • | Rita Leafgren, University of Northern Colorado |
Earth Science News updates and archives
| • | Betsy Mason, Earth Science News updates and archives |
| • | Source: Newswise.com |
Feature Articles
| • | Stephen Marshak |
| • | Betsy L. Mason |