Thanks for the tip, DA.
First read this:http://www.discover.com/issues/aug-05/cover/?page=2Title: Testing String Theory
Discusses: (1) Gravity-Wave Test (2) Particle-Accelerator Test (3) Laboratory Gravity Tests (4) Dark Matter Searches
Summary:
String theory predicts:
...(1) The existence gravitational waves of certain frequencies. The Laser Interferometer Gravitational Wave Observatory has been in use since 2002, and Laser Interferometer Space Antenna, called LISA, is expected to be launched several years from now.
...(2) The existence of 'sparticles' (high mass particles) . LHC (Cern) may reveal these. The discovery of sparticles would support String Theory, but not confirm it.
...(3) Slight deviation from the inverse square law at the microscopic/atomic scale. Many laboratory experiments have been conducted. As yet no evidence of deviation has been found.
...(4) The existence of neutralinos, the sparticle partner of force-carrying bosons, a leading candidate for dark matter. The Cryogenic Dark Matter Search, Minnesota is among other projects conducting the search.
Bottom line:
"If the signals LISA and its successors pick up are those expected by string theorists, they will verify that some version of string theory is the correct quantum theory of gravity"
Now go here:http://www.math.columbia.edu/~woit/wordpress/?p=219
"Kaku?s article is entitled Testing String Theory, and is a thoroughly intellectually dishonest piece of writing, designed to mislead anyone without expertise in what is at issue here. He succeeded in misleading whoever wrote the blurb for the article which goes: ?No experiment has ever allowed us to test whether any of the assumptions of string theory are true. That is about to change.? No it?s not. None of the experiments Kaku mentions will ?allow us to test whether any of the assumptions of string theory are true?.
As I?ve explained in detail on other occasions, the simple fact of the matter is that string theory does not make any predictions, unless one adopts a definition of the word ?prediction? different than that conventional among scientists. A scientific prediction is one that tells you specifically what the results of a given experiment will be. If the results of the experiment come out differently, the theory is wrong. String theory can?t do this, since it is not a well-defined theory, but rather a research program that some people hope will one day lead to a well-defined theory capable of making predictions."