Imagine a material lighter than steel, longer-lasting than lumber and strong enough to support 120-ton locomotives.Now imagine that material is made from milk containers, coffee cups and other plastics that we recycle.It’s called structural plastic lumber, and the ingenious, nontoxic material was invented by Thomas Nosker, an assistant research professor in the Department of Materials Science and Engineering and principal investigator in the Center for Advanced Materials via Immiscible Composite Materials at Rutgers University. The late Richard W. Renfree, Nosker’s graduate student who later became a Rutgers professor, helped invent the revolutionary material.