From ABC:
Pairs of tighty whities are being buried in backyards and farms across the nation to check how healthy soil is.
Soil Your Undies is a joint campaign by the University of New England (UNE) and CottonInfo.
The experiment is to bury 100-per-cent cotton underwear for eight weeks and then dig them back up. The more degraded they are means the better the soil health is as it measures microbial activity