Both the Bananas and the chocolate stories are true. Sometime after 2030 cocoa beans will not be able to be grown where they are now. They will need to go higher in elevation which is into protected places in Africa.
Bananas in the store are all one plant that has been propagated. This plant is killed by a fungus. The fungus is already in Africa and some are dying off in South america.
Research is under way for both cocoa and bananas though. This is the second time for bananas too. In the 1950s the cultivar in stores was wiped out by a similar fungus. Now we have Cavendish bananas. The one that was wiped out was supposed to taste better
Noooo

But I'm sure they can grow it in a greenhouse????
Sadly it's the same for coffee. The prices have already jumped a bit, even the robusta . Before I left Starbucks in 2012 we were already being told that growing was becoming more difficult.
Did you know that the only place in the world where coffee is indigenous is Ethiopia?
Wow weird.