Gold Greed and Glory
"Pure gold weighs 19.3 times more than water. Imagine a ball of gold size of a basketball. It would weigh 144 kilograms." (p.7) Gold is very priceful matter. Since this, it has been used since acient ages. It also has been the cause of war. However, now, it's used in electronics. Sargent,B. (2014) Gold Greed and Glory. Cambridge, Cambridge University Press.