A timeline of actions tied to the prohibition of or ending of slavery from the meeting of the Continental Congress in 1774 to John Brown's raid on Harper's Ferry in 1859.

The Chicago Field Museum provides a comprehensive soil education project covering topics such as soil structure and organisms living underground. Students can use the site for research or do the full-blown project, where they establish a...

Read this article to learn how scientists are using instruments to try and monitor our land biosphere. Scientists have learned two different types of models to help track data from our land.

Examine why newly-formed lava has little plant life, explain why one generation of plant life allows subsequent plant life to grow in an area and determine why organic soil formation is a slow process.

This lesson plan describes activities which allow students to investigate four types of weathering and their relationship to soil formation. The four weathering forces investigated include wind, running water, plant roots and freezing...

This on-line collection of exercises can be conducted to illustrate the formation and properties of microbial biofilms. Activities include: A Biofilm Primer, An Interesting Paradox, Build a Biofilm Reactor, Bring 'em Back Alive, Buccal...

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

Everything you need to know about sedimentary rocks and the processes by which they are created, including weathering, soils, environments, and classification.

Hans Hofmann is profiled at this site in a format that begins with a brief biographical sketch of his life. His works are then listed by appearance in the museum's database. Each work is presented in thumbnail format with brief...

Through five lessons, students are introduced to all facets of the rock cycle. Topics include rock and mineral types, material stresses and weathering, geologic time and fossil formation, the Earth's crust and tectonic plates, and soil...