I am spending much of this weekend traveling. The best part of traveling is getting a primo window seat, with clean glass, and watching the landscape crawl by below. If I could imagine something even better, it would be riding the International Space Station. I might not be as entertaining as astronaut Chris Hadfield (who really ought to have his own web domain by now), but I surely would be sharing as many photos as he did during his stint upstairs. The most valuable thing the space program has brought us, I believe, is not the possibility of expanding into the universe but the synoptic view of Earth it has given us.