LOL, here comes a word from the farmer.
Plants grow better in warmer climate, and it's almost on a logarythmic scale...untill the peak is reached, and after that the road goes down into zero very quickly.
Warm is better than cold, hot is no better than warm.
Hot hot has almost nothing between a forest and a desert. If you loose the soil, you also loose the water. And BTW, what's teasing them in S-America is that they burn down the rainforest, cultivate the rich soil, and basically milk it dry, typically by planting coffee for so and so many years, then when the soil is becoming too poor for it it goes to pasture, and eventually ends up as a prarie. Welcome to the world of cheaper beef and coffee. Beef at prices I can't beat at least.
As for what Retro said:
"No, because once enough ethanol had been produced, the ethanol plant itself would run on ethanol! "
hehe, very true.
Funny, somehow I can feel some people resisting the concept of "growing" energy, while not feeling safe or informed enough to directly oppose it.