Here is an interesting infographic that presents information on the amount of carbon dioxide we can safely release into the atmosphere compared to the actual amount we have released to date.

How do scientists know what the Earth was like in the past? This second installment of a six-part series focuses on paleoclimates and provides an overview of how geologists determine information about past climates using fossil...

What is biogas and how is it made? After examining background information about the sources of biogas and biogas generators, class members follow the provided information and build a biogas generator that can be used in the...

This particular site is part of a larger online exhibit from the Natural History Museum covering various aspects of fossils and fossil research. Here, seven types of fossils are listed and each type is given a picture representation.

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.

Describes four different kinds of fossils and how they form.

Presents interesting facts about fossils.

At the online companion Web site of "Evolution," the seven-episode series on PBS, piece together clues to how one of our early ancestors looked as you examine images from four significant fossil finds of Australopithecus afarensis.

Is it a feathered dinosaur, or the ancestor of birds? Find out about the Archaeopteryx lithographica whose fossil remains show feathers similar to that of a bird, and whose skeleton resembles that of a dinosaur.

Discover the Oviraptorosaur in this impressive field guide presented by the Carnegie Museum of Natural History.

This excellent resource from the San Diego Zoo presents extensive information on West African lungfish including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts.

This lesson will present how to identify and classify crystals. It is 2 of 3 in the series titled "Geology: Crystals."

Explains what stromatolites are, their formation from colonies of cyanobacteria, their evolutionary importance, and where they can be found living today. Thrombolites are similar to stromatolites but form differently. They can also still...

Learn what non-renewable energy is and the different types.

This lesson will present how to identify and classify crystals. It is 3 of 3 in the series titled "Geology: Crystals."

This lesson will present how to identify and classify igneous rocks. It is 2 of 3 in the series titled "Geology: Igneous Rocks."