According to a laboratory compositional analysis, the elemental recipe for a 129-g Apple iPhone includes about 24.1% aluminum, 15.4% carbon, 14.4% iron, and 14.5% oxygen by weight. And altogether, that pile of smartphone powder—ground from a $700 device—has a raw elemental value of about $1.03.
Read More
Scientists at Germany’s Freiberg University of Mining and Technology have figured out that they don’t have to dig up the earth to extract the semiconductor germanium—they can make plants do the work for them.
Read More