With the consolidation of farms, biodiversity has plummeted. There are 4,000 known varieties of potato in the world, yet, the typical American supermarket would be lucky to carry eight of them. The consolidation of species means that crops are much more susceptible to pests as evidenced during the Irish potato famine of the 1840’s. Growing your own food allows you to support biodiversity by choosing rare varieties that may not be available at your grocery store. Grocery stores represent a tiny sliver of the diversity of edible plants that nature has to offer. The current system has homogenized our diets, taking its toll in more ways than one.