Earthworm Watch
A great, free, hands-on family activity for exploring the soil beneath your feet, and learning more about the wonders of earthworms.
OPAL Soil & Earthworm Survey
An England wide survey that aimed build up a picture of soil quality and earthworm distribution all over the country.
Soil Your Undies
A free (and fun!) hands-on family, farmer or gardener activity for measuring soil biological activity by burying cotton underpants in the soil.