Is anyone here familiar with Kip Thorne's wormholes? I was thinking about what a wormhole would look like between (say) Brisbane and London, and it occurred to me that atmosperic pressure difference between the two would cause nasty local weather problems if the hole ends weren't enclosed suitably. Then I thought about height difference between the two, and thought "if one end of a wormhole were on top of a mountain, and the other end at the bottom, would it be difficult to climb "up" through the wormhole? If not, then energy conservation is violated. So, could wormholes cause the violation of energy conservation, or does gravity propogate through a wormhole in a way that resolves this problem? Finally, what about Kinetic Energy? What happens when the two ends of the wormhole are moving relative to each other (as Kip Thorne describes when explaining how to make a time machine from a wormhole)?