Anachronism

[10101010]

I've read that human beings haven't changed much physically for the past 40,000 years or so. What if you could transport a human from that era into our present one? Maybe we have changed quite a bit physically, but we just don't really have a way of measuring the changes. What do you think the most significant physical differences would be between a modern human and the historical one? Exposure to what would kill the human first? I'd imagine it would be something like a bacterial or viral infection. Do you think the human would hear things that we automatically tune out? There must be a huge difference between the amount of electromagnetic waves bouncing around now as compared to then. Could that mess the human up also? Never mind the air-born viruses and bacteria, what about air pollution and other changes in the atmosphere? That human could probably breathe, but for how long?