Make Ethanol and the cost of food increases

If you use food crops for fuel and a farmer can make more money turning food into fuel, guess where he will sell his crops to make fuel and not food.

Well now with the increase in wealth around the world meaning more meat is being eaten, it means more grain is needed to feed the animals and with more crop land going to ethanol and with bad harvests in Australia for the last two years, it means there is now a food shortage.

Suddenly, global warming isn't as important as feeding people.

Even here in the US, people can't get as much of the type of rice they want. Which causes hording which makes things worse. There isn't a food shortage in the US (unlike other countries) but there isn't as much of the type of food some people want so people will panic. Each cheaper rice instead of the premium rice and you will be fine.