When it comes to change, the Smithsonian National Museum of Natural History has got it covered. The online exhibitions of their "Forces of Change" series covers the current changes the world is facing, from sky to soil, and everything in between. Exploring the world of soil is the focus of "Dig It! The Secrets of Soil" and visitors can start off by listening to a podcast of a Bureau of Land...

The Natural Resources Conservation Service provides an array of materials to assist people with their understanding of soils. Through an online presentation, users can learn ten key points about soil characteristics and their importance. Teachers and students can find many fun activities including soil erosion and particle size demonstrations and soil songs. The website provides a great...

The Soil Science Society of America was founded in 1936 in Madison, Wisconsin and is a scientific society that aims to advance the field of soil science, with a focus on the areas of "crop production, environmental quality, ecosystem sustainability, bioremediation, waste management, recycling, and wise land use." Visitors will find that the website features links to their six publications, most...

From Alfisols to Vertisols, this substantial resource (.pdf format only) from the US Department of Agriculture's Natural Resources Conservation Service provides an in-depth treatment of soil taxonomy around the world. Published in 1999 (Second Edition), this Soil Taxonomy text includes 23 chapters, covering the basics of soil classification through the world distribution of orders and suborders....

At this website, the University of Idaho provides information and images of the twelve classifications of soil taxonomy. After learning about the soils, users can find world and United States maps illustrating where each are located. The website offers downloadable documents of the soil taxonomy text, maps and errata sheet for the second edition of _Soil Taxonomy, A Basic System of Soil...