First Time Blogging in History Class

Well, we've decided to make a blog for our social studies history class as well. This time, though, we got different groups. I'll miss you old guys!
Anyway, these posts will be much shorter in length, and all we'll be saying is what we thought was hard, easy, and what we don't get. No feelings or thoughts to write. Aww...Okay, to get to the point.

This class we were learning about evolution of the human species. Just yesterday I watched a movie called "Being", about where scientists predicted where the first humans came to being (according to them, we all came from Africa). Well, we learned our earliest descendents were the monkey family. I thought the concept of the knowledge was quite easy to understand, but of course I still get some doubts about what scientists think. Though the majority (I guess) approved this theory, it doesn't really mean its true. It's cool, but still blows my mind how monkeys can change into humans. If that's the case, then why are there still monkeys existing? Shouldn't every monkey now be a human? Plus, I don't get how we could have this level of intelligence if we were once monkeys. I asked my "elders" this, and they said that because we had to adapt to our environment, our brains slowly became adjusted to these conditions and facts so we'd have that knowledge. Would level of intelligence and knowledge be improved over time then?
The biggest question and vast enough to fill every corner of the- well, universe- would be: Would we ever discover what our past was? And what would it be when (if) we found out?