Hmm. Actually, my main prediction for the future that I am really very confident about is that average global nutrition will be much better. - This is because several of the most economic climate change mitigation strategies involve increasing planetary biomass and agri/aqua cultural yields as a way of getting carbon sequestration to pay its own way. Biochar, ocean iron fertilization, and the ever increasing spread of highyield/low soil degredation (I dont mean organic farming, per se, but highly computerized and automated "conventional" farming that doses fertilizer and pesticides accurately enough that neither ends up in runoff or groundwater)  agricultural and biotechnological advances likely mean that the one thing the future is not going to be short of under any circumstances is calories or protein. The protein will probably be more shrimp and mussles (because when you are creating artificial foodchains in the highsea areas that are currently micronutrient restricted, extracting the calories at the lowest possible foodchain step makes the most economic sense) than pork and beef, but both of those are key ingredients in some seriously tasty cusine.