Most soils in New Zealand are low in iodine resulting in low concentrations in locally grown foods. (nrv.gov.au)
Masiello is an expert on how carbon behaves in soil, and she noticed a vexing problem in both the scientific literature and findings from her lab: Charcoal is abundant in soil, particularly in fertile regions like Europe's breadbasket and America's Corn Belt, but while it's clear that most soil charcoal came from wildfires, it wasn't at all clear why it stayed there so long or how it got into the soil after a fire. (sciencedaily.com)