Key agricultural commodity prices have risen sharply over the past two years, some reaching their highest level in a decade (see graph below). Now the UN says that climate change could cause production to fall 30 percent at the same time food demand is forecast to rise by 50 percent. The caution with this prognostication is that it was made by two of the worst professions at forecasting: economists and meteorologists! Nonetheless, any price increases will be further compounded by the policy decisions that are being made. 

Restrictions on inputs such as land, fertilizer, water, and biotechnology. Disincentives for fossil energy development. Initiatives such as local/food sovereignty. Prohibiting products from certain geographies (...