Department of Energy researchers have developed a new "metamaterial" which promises to lead to the development of cloaking materials and much improved imaging technologies. This new "left-handed" material reflects light at a negative angle, as opposed to natural materials which reflect light at a positive angle, and promises to give scientists the ability to control light the same way semiconductors control electricity. This could lead to the ability to create a lens which could see details smaller than one wavelength of light, which is currently impossible, giving the ability to even look inside of human cells, for instance.