Conception of Time

We never really see time. We see only clocks. If you say this object moves, what you really mean is that this object is here when the hand of your clock is here, and so on. We say we measure time with clocks, but we see only the hands of the clocks, not time itself. And the hands of a clock are a physical variable like any other. So in a sense we cheat because what we really observe are physical variables as a function of other physical variables, but we represent that as if everything is evo...

 International Environmental Year Project

We don't have a perfect understanding of Earth's systems and processes; it may be unachievable in the face of such complexity. However, we continue to develop imperfect but useful mathematical models, and we have beer able to isolate physical variables in the laboratory. We should celebrate our capacity to learn quickly about such things; and we need to continue funding the search for this vital information. We may need to commit to an International Environmental Year project similar to the I...