Some scientific advances are so counterintuitive that they completely change the way we think about the world. Examples are the ideas of Isaac Newton or Charles Darwin or Marie Curie. Which scientific discovery made during your lifetime has mot significantly affected the world around you?

309-word version: U or North Carolina--Chapel Hill
Of all the scientific advances I have seen during my lifetime, it is difficult to choose just one that has affected me most of all. So I will choose two that go hand-in-hand: the cell phone and the internet. The cell phone has made people freer on one hand...