This article is a good one, although short.

http://abcnews.go.com/Technology/wireStory?id=4529248

Money Quote:

"This leads us to a very important, very interesting conclusion," Carbonell said. It is this: that hominins which emerged from Africa and settled in the Caucasus eventually evolved into Homo antecessor, and that the latter populated Europe not 800,000 years ago, but at least 1.3 million years ago.

Imagine what kinds of cities we had before the last ice age? Even though there is no evidence, someday we just might find out how long humans have been alive on this world.