What: An “elevator” that carries heavy loads into space

Where: Equatorial Pacific Ocean

Cost: $10 billion

Crux: A 62,000-mile cable—one end “anchored” in space and the other attached to a platform in the Pacific—that acts as a rail for laser-powered lifters carrying up to 5 tons.

Haven't you noticed the irony of asking the question "when?" about time travel in your March feature? Can't we assume that if it was ever going to happen we would have already heard?


Peter Rosenl
Ithaca, N.Y.