[Dan Zollman]

Although there are many equations that support string theory, much of the theory depends on assumptions. String theory answers many questions about physics, but some of those answers are just generated so that the answer can be incorporated into the theory.
However, there are some specific experiments that will be done that can confirm some of what string theory has said and if the experiments are successful, they might give some very solid evidence. The "Laser Interferometer Space Antenna" will be launched in 2013, and is supposed to detect "gravity waves" from the big bang which are predicted by the theory. The Large Hadron collider which is currently built will search for particles predicted by string theory.
I was personally very happy when I saw the cover of the August 2005 Discover magazine: "Is String Theory about to Snap?"