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String theory

More about string theory - at present, mostly about the extra dimensions that play such a central role in that theory

Extra dimensions - and how to hide them
Why our universe could possess dimensions beyond length, width and depth - and why those dimensions need not be noticeable in everyday life
The embedded universe
Is our three-dimensional world embedded in a higher-dimensional space?
Particle accelerators as black hole factories?
The intriguing possibility that the next generation of particle accelerators might produce - and allow the detection of - miniature black holes
Hunting for extra dimensions
Ways of detecting extra dimensions - and why the fact that our earth orbits the sun is a relevant data point
Simplicity in higher dimensions
Why matters that seem rather complicated might be much more simple in higher dimensions