String Theory

"This landscape of possibilities is a mathematical space representing all of the possible environments that theory allows. Each possible environment has its own laws of physics, elementary particles and constants of nature. Some environments are similar to our own corner of the landscape but slightly different. They may have electrons, quarks and all the usual particles, but gravity might be a billion times stronger. Others have gravity like ours but electrons that are heavier than atomic nuclei. Others may resemble our world except for a violent repulsive force (called the cosmological constant) that tears apart atoms, molecules and even galaxies. Not even the dimensionality of space is sacred. Regions of the landscape describe worlds of 5,6…11 dimensions. The old 20th century question, 'What can you find in the universe?' is giving way to 'What can you not find?'

{Personally, I think this is fascinating . . . for more, read the entire article here.

Or just watch the video.

LEONARD SUSSKIND, the discoverer of string theory, is the Felix Bloch
Professor in theoretical physics at Stanford University. His
contributions to physics include the discovery of string theory, the
string theory of black hole entropy, the principle of "black hole
complementarity", the holographic principle, the matrix description of
M-theory, the introduction of holographic entropy bounds in cosmology,
the idea of an anthropic string theory "landscape".