Visible Light Bent the 'Wrong' Way: Scientific American:
"Everyone has seen a prism bend light. Now researchers have constructed a material that bends visible light in the opposite way. The odd effect, known as negative refraction, is similar to what is needed in far-out proposals for creating a cloak of invisibility. "
"In related news, another group used a similar trick to magnify light from objects too small to see with conventional lenses, which might someday prove useful in data storage. The new designs rely on an unusual property of gold and silver."