Journey To The Center Of The Earth

Not quite the center of the earth, but still quite interesting. Chikyu is a giant drill built by Japanese scientists. In 2007 it will drill down to a depth of seven kilometers to explore the Earth's mantle. They've just ended their first training mission, successfully.
While we're at it - the transatlantic train is another ambitious plan. A train that will go from New York to London in less than an hour, going 5000MPH through a tunnel floating in the Atlantic ocean... Only a theory though.