Monkey Planet......

[The Brain]

And to think that whenever I watch "Planet of the Apes", all I think of is Ant doing his Heston impression.

<b>EDIT</b>:

The New World Power:
Luckily, on region will survive: the Southern Hemisphere. Africa will strickly be desert for the most part, but Brazil will quickly chop down its rainforrest and convert it into farmland. At first it will use Oil from Argentina, but slowly it will be forced to turn to manual labor. It will slowly turn to simians as a slave labor, but as Darwin teaches us, those with the most desirable qualities will survive. Thus it will be on the Brazilian farms. Those monkeys will higher intelligence will slowly learn cultivation until, after many many centuries, they are finally able to communicate, and then take over the farms.

I would buy that argument, except <a href=http://www.press.jhu.edu/books/walkers_mammals_of_the_world/tables/text.south_america.primates.html target=new>aside from humans, all primates in South America are physically small and weak</a>. I don't even believe most of these species would survive the destruction of the rain forests, much less be able to perform the physical labor you describe.

The larger primates who were depicted in the film (chimps, orangutans, gorillas) are all African in nature.