Soil Your Undies' asks Pennsylvania to bury underwear to test soil - EHN

Soil Your Undies Challenge Natural Resources Conservation Service

How to test your soil health with a pair of cotton underwear - Farm and Dairy

Soil Your Undies To Find Out How Healthy Your Soil Is - Earth911

Soil your undies' to test the quality of your soil

Farmers in southern Minn. test soil health with buried undies

Soil Your Undies' campaign asks Pennsylvanians to bury their underwear to test soil health - The Allegheny Front

Tattered underwear means healthier soil

News in briefs: Buried underwear will show state of Swiss soil

Soil Your Underwear Challenge – Saint Louis Science Center

Soil Your Undies' asks Pennsylvania to bury underwear to test soil - EHN

Underwear project, and an art and sunscreen at PA state parks

soil-your-undies - Oswego Lake Watershed Council

Soil Health and the Cotton Brief Challenge - Part 1 - Clackamas SWCD

Soil your undies in Sudbury — CBC tests local land for active microbes

Soiled Undies? Biology Article for Students