Snails' Teeth Beats Spider Silk as Nature's Strongest Material

# Summary British engineers discovered that limpet snail teeth are made of the strongest natural material on Earth, about five times stronger than spider silk, composed of iron-containing crystal nanofibers encased in a protein matrix. The material can withstand pressure comparable to a single strand of spaghetti holding up 3,300 pounds of sugar, rivaling high-quality carbon fibers and making it a potential model for engineering new advanced materials.