Dr. Dennis O'Neal of Palomar College designed this site to introduce students to a tutorial on the Classification of Living Things. Topics addressed at this site include the Linnaen system of classification, amount of...

The University of California-Berkeley Museum of Paleontology has recently launched this online database of the Daniel I. Axelrod and the Berkeley leaf collections, which contain over 2000 modern leaf specimens bleached...

Weather is notoriously unpredictable; however, climate descriptions, which identify average and normal temperatures and precipitation levels, tend to be perceived as stable, at least over time scales that humans can...

These lecture notes from the University of Michigan's Global Change curriculum provide information about paleoclimate and climate modeling. This website includes a list of suggested readings, an image-rich overview of...

This site, hosted by the National Aeronautics and Space Administration Jet Propulsion Laboratories, is the press release from the Mars Exploration Rover Mission on July 12, 2004. It contains new images from the...