The green in American paper bills is chromium oxide, a refined version of chromite, a naturally occurring ore in the Earth鈥檚 crust. This ore is also the source of chromium metal which is produced...
The surefire signs that Spring is just around the corner have started to appear 鈥� trees are budding, flowers beginning to bloom and there鈥檚 more rain than snow. (Full disclosure 鈥� I live in the UK...
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