Dude, we evolved on different continents for 50,000 years. We look different. Our bodies' biochemistry differs (different medications for whites + blacks for blood pressure). Why do you think brains came out the same? They didn't, and all the hard data, and all the evidence of everyone's eyes - how black vs white, or other populations, live, shows that. It's ugly, it's not nice, people don't know what to do about it, it's a can of worms, but it's true.