Described is an acid-leaching facility at Macquarie University in Australia for teaching paleontology. The facility is used for teaching both undergraduate and graduate students and for research by staff and graduate students. Drawings of the facility are included and courses are described. (Author/RH)

Argues that advances in Earth science call for their inclusion in Earth history. States that the focus should be on the planet and the process by which it reached its present state. Explains pre-solar and pre-lithospheric history, interacting spheres of influence, characteristics of eons and eras, and their transitions. (RT)