Spider Silk Strength
Whether or not we like these eight-legged creatures, we have to admire one thing about spiders ? their ability to churn out certain fibers that, although they might look fragile, the individual threads are extremely strong ? pound for pound they are stronger than steel.
“Modular Evolution of Egg Case Silk Genes Across Orb-Weaving Spider Superfamilies.” Jessica E. Garb and Cheryl Y. Hayashi in Proceedings of the National Academy of Sciences, Vol. 102, No. 32, pages 11379?11384; August 9, 2005. www.pnas.org