Scientists are developing new plastics that are “green” from the cradle to the grave. Given that the new polymers they are working on often come from pine trees, firs and other conifers, they are giving the word “evergreen” added resonance.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/x...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/x...