Olive tree groves cover the hills of Córdoba, Spain. Approximately 90% of all harvested olives are turned into oil; the remaining 10% are eaten as table olives. With rising temperatures and phenomenal weather variations in growing regions, olive groves on high hills or slopes will probably suffer less, but groves located on low-altitude areas or plains could become totally unproductive. (Photo by Benjamin Grant/Penguin Random House)
