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silver

Science Shows How We Flush Billions of Naira Down the Drain Yearly

Scientists have found trace amounts of copper, gold and silver in sewage as well as lost jewelry which they believe get into the sewers through a myriad of ways. What Are the Sources? They can get into sewers from precious metals which are increasingly being used in shampoos, cleaning products, cosmetics and detergents; shavings from [...]

So Tell Me, Exactly How Much Is an Olympic Gold Medal Worth?

With American, Virginia Thrasher winning the first gold medal at Rio in the 10-metre air rifle contest, just how much is it worth? In making the medals that will be awarded athletes at the ongoing Rio Olympics, a team of about 100 people - including sculptors and machine operators - have been working in secret inside [...]