Describes plants and animals that lived during the Ordovician Period, where it falls in the geologic time scale, tectonic activity happening then, the climate and environment, and extinction events.

Provides an overview of the Mesozoic Era, its time frame, geological and tectonic activities, the climate, plants and animals, and extinction events towards the end of this era.

Explains the importance of index fossils for the dating and chronology of events in the fossil and geological records. Discusses uses and examples of index fossils in the Cenozoic, Mesozoic, and Paleozoic Eras.

This fact sheet highlights some of these recent seismic events that are of special interest because they have caused notable geologic changes to our landscape or devastating destruction to our society.

Students will look at their schoolyard and determine where a puddle will form after a heavy rain. They will map the school yard and draw chalk lines to demonstrate their predictions. After a rain children will check their predictions and...

Explanation of what might happen in the next mass extinction event on Earth.

Resource is a brief explanation of an aquifer and how they work. This article also touches upon artesian wells. A picture and a fun activity to illustrate the concept of an artesian well are included. Click Home to access the site in...

Capillary is described and explained. It is related to surface tension. Examples in botany and human physiology are given.

Describes the formation of rivers and the transport of soil and sediment. Links to related material is provided within the text.

This site from USGS describes the importance of ground-water, provides a map of ground-water use (by state), a map of the percent of total withdrawals coming from ground water, and a map of the percent of public-supplied population...

This informative and interactive site examines how we can get power from garbage. Topics include: waste to energy plants, only ash remains, a bright idea, and more.

Learn about the importance of water quality and environmental influences that reduce it.

STAN T. Rex, a Tyrannosaurus Rex skeleton that was excavated and reconstructed by the Black Hills Institute.

This is an Ammonoid, more commonly referred to as an Ammonite, an extinct ancestor of today's octopus, squid and nautilus.

Ammonoids, more commonly referred to as Ammonites, are the extinct ancestors of today's octopus, squid and nautilus. This page shows several types.

Picture of the fossil Leanchoilia superlata from the Phylum Arthropoda recovered from Burgess Shale.

This manual was created by 4th grade students at the Alice B. Beal Magnet School in Springfield, Massachusetts, during a learning expedition on rocks and minerals. The expedition included fieldwork to local geological sites and to...

Looks at the geological changes, climate, and flora and fauna of the Devonian Period.

The Jurassic Period falls within the Mesozoic Era. Read about geologic events that occurred then, the climate, and the plants and animals, including the many types of dinosaurs.

Discover the accuracy of dating methods and fossils because of the scientific approach used.

Are you interested in an environmental career? Explore current environmental job opportunties in the Earthworks database.

Are you interested in an ocean related career? Explore the variety of career opportunities that are available in underwater technology.

Geologist David White of the United States Geological Survey lived in this house from 1910 to 1925. His researches into the distribution of petroleum resources became essential to the oil industry.

See beautiful photographs of Canadian mountains while introducing yourself to the formation, vegetation, animal life, and other geological features.