Artificial muscles made from carbon nanotubes are 100 times stronger than human muscles

http://www.technologyreview.com/NanoTech/17872/page1/

Researchers at the Nanotech Institute at the Univeristy of Texas at Dallas have recently discovered how to wind carbon nanotubes into "yarn strands" which exhibit incredible strength. Possible uses for this technology include prosthetics, micro machines, and robotics. The tubes are very small in diameter - invisible to the human eye and about 2% of the width of a hair. They can be up to a meter long.
Problems still exist. These yarn strands show a property dubbed "creep." This means that when stretched very far, the yarn strands will not return to their original length, but be slightly longer. This technology looks very promising, and I think that carbon nanotubes will play a role in future technological advances because of their size, strength, and versatility.