Is the Age of Exploration long dead? At
The Last Word on Nothing, Richard Panek made the point that there's no longer anywhere on Earth people haven't been. Even the South Pole, which many would consider the most remote spot on the planet, is a regular tourist destination.
Ah! But what about the deep sea? Humans obviously haven't seen every inch of it--not even close. And the deepest spot in the ocean, the Challenger Deep, is much harder to visit than the South Pole. In fact, only one
manned expedition has ever touched bottom, making it more like the moon than the pole.