Why some people are soiling their underwear to help the earth, Environment News
Farmers and schoolchildren in Australia and New Zealand join global movement to improve health of world beneath our feet
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Farmers in southern Minn. test soil health with buried undies
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Soil Your Underwear Challenge – Saint Louis Science Center
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Information library for children and young people - Bladder & Bowel UK
The term 'soiling the nest' could be excusing bad behaviors - Upworthy
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Why some people are soiling their underwear to help the earth
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