This is a little far away from our usual subject matter, but scientists have managed to develop the lightest material on earth. Made from 90% nickel and consisting of 99.9% air, the material named "ultralight metallic microlattice" can easily balance on top of a dandelion without crushing the seeds. Tobias Shandler, one of the scientists, said the trick is to "fabricate a lattice of interconnected hollow tubes with a wall thickness 1,000 times thinner than a human hair."