'Solid smoke' is world's lightest material

A new aerogel could be used for insulated clothing, refrigerators with thinner walls and building insulation, thanks to a series of breakthroughs.

A one-pound boat that could float 1,000 pounds

By examining how water striders walk on water and how wood gets its lightness and great strength, researchers have created a material so buoyant that a boat made from one pound of the substance could carry  1,000 pounds.