In the end, it is all about soil.
Rich, nutrient-dense soil plays a huge role in the level of nutrition in food. Healthy soil = healthy food. (This assumes organic seeds, not genetically-modified seeds, of course.)
There was some very grim news that I heard about recently, and it has to do with the quality of our soil, as a result of the nuclear accident at Fukushima.
After the earthquake in Japan, scientists at UC-Berkeley (UCB) measured the radiation levels of soil in various parts of California. Read more »