Author's Note: What would happen if I drilled a tunnel through the center of the Earth and jumped into it?
Politicians like to spout off about how we shouldn't spend money on space when so many problems here on the home planet need solving. I strongly disagree, but perhaps deep exploration of Earth could offer a compromise. To explore the ocean floor, lower crust or mantle requires technology on par with spaceflight -- in some ways, it's harder -- and could produce comparable economic, educational and technological side benefits.
In many ways, we know more about the moon than we do about our own oceans, or about the Earth's interior. It's high time we changed that.
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