I don't think is possible to predict what we will look like in half a million years. Is too long a period and probably humanity will not make it so far. But we can get some clues on our future evolution looking at our present and our past. We already evolved. If compared for instance to the medieval man (I'm talking about healthy and well nutrished individuals, not the starving folk in the countryside) we are considerably taller and far less muscular. Somebody said we are also more clever but I completely disagree on that: we have a more trained mind and a wider knowledge but that's it. Evolution is still working on those lines: every new generation is taller than the previous one and looks like the process is accelerating in the last two centuries. Mainly because of our diet: we eat more, in a more varied way and we often employ food integrators to fill the holes.
Interesting that you should mention the food part because that food we eat now is not natural, a lot of it is artificial and sugary. I feel if we go down that road we will alter the way we look completely. It could be that we branch off into various subspecies as well based on our like goals.
I consider food one of the main factors that will determine our evolutionary path. I remember talking to a Canadian doctor some years ago. He was convinced that the use of antibiotics and steroids to raise cattle weight was the reason why the average weight of newborn babies in his country was increasing. In his opinion, the new generation of Canadians were bigger, larger but more fragile and less responsive to medicines. Ok, I would not take this as a proven fact, but I would not underestimate it either.
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Title: Evolution
Comments: Wow. I just randomly discovered this and was reading through the comments, but all I'm seeing is a bunch of Internet detective types and religious people bashing evolution yet displaying only the most naive and [amateur] understanding of it.
One of the few who seems to have his head screwed on tight is Zeuts, who seems to actually be educated in the dynamics of evolution.
DNA exists, mutation happens, evolution happens. That's just a fact of nature.
I think humans are done evolving, but judging by the way technology is advancing and the sheer fact that computing power is doubling every 18 months I would say that we will see a big difference over the next 100 years, we are already sending missions to colonize mars so we will be a milti-planet species by the year 2040. Not to mention we will have more technology for medical reasons so we may have computer chips implanted in us for internet browsing, personal profiling, device-less phone calls, body health scans to aware you of improper diet and spawning diseases / sicknesses. This is likely to happen before I die or shortly after, so I can only begin to image what the next half a million years will bring. If I had to guess I would say bio-engineering to perfect personal insecurities, slower or seized aging, I think racism will be set aside so more inter-racial marriage will cause us to become more of a whole unified skin color.
Aside from this I am overloaded with ideas and thoughts but only time will tell.
I don't know what we will look like but I think there will be one dominant 'brown' colored race that will absorb all the others because by then there would have been so much intermixing of everyone with global travel being a matter of minutes rather than hours or days.