EQUIVALENT EXCHANGE. www.nytimes.com/2017/01/26/science/solid-metall... Ed's site: edlatimore.com/ hes got good advice join list: PoliticsAndStuff (531 subs)Men EQUIVALENT EXCHANGE www nytimes com/2017/01/26/science/solid-metall Ed's site: edlatimore com/ hes got good advice join list: PoliticsAndStuff (531 subs)Men