Food that is becoming extinct

There are some teories that afirm that peanuts are not going to exist anymore in a few years and that's because the conditions (climate, underground temperatures, etc) that these plant need are not going to exist anymore or maybe they are going to exist but is going to be really strange that they present. 
Peanuts are very famous all around the world and they come from México, from those prehistorics times, like from Mexico-Tenochtitlan.