Scientists from the University of California have developed a new metallic “micro-lattice” material and they claim that it is the lightest solid material on earth. This “micro-lattice” material has a density of 0.9 mg/cm3. The number might not mean something to you but it means that is about 100 times lighter than Styrofoam. It is so light that if you put it on a dandelion it will not damage it at all (picture). It is basically 99.99 percent air and 0.01 percent nickel-phosphorous tubes that are interconnected. The material has a wall thickness of 100 nm, about 1000 times thinner than a human hair. This is very impressive, scientists still creating smaller, thinner and lighter materials but I think they are touching the limits.