Spider silk—six times tougher than Kevlar and stronger than steel—has now been produced by an unexpected source.

Spider silk is a biological protein fiber spun by spiders. Many of these fibers have exceptional properties, including high tensile strength, extensibility and toughness, being able to absorb large amounts of energy relative to its thickness before breaking.

Eco-friendly Fibers Possible as Silkworms Spin Spider Silk for First Time comes via ChinaTechNews.com.