Gianneschi Spider (IMAGE) Northwestern University Caption Latrodectus hesperus, known commonly as the black widow spider in North America. Researchers at Northwestern University and San Diego State University have unraveled the complex process of how black widow spiders transform proteins into steel-strength fibers, potentially aiding scientists in creating equally strong synthetic materials. Credit Gregory Holland, San Diego State University Usage Restrictions Credit must be given License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.