Eating to Extinction: The World’s Rarest Foods and Why We Need to Save Them

by Dan Saladino

Of the 6,000 plant species humans have eaten over time, the world now mostly eats just nine, of which just three – rice, wheat and maize – provide 50 per cent of all calories. Add potato, barley, palm oil, soy and sugar (beet and cane) and you have 75 per cent of all the calories that fuel our species.