Mining for precious metals like gold, silver, and copper is extremely costly. Not only does it require a huge amount of energy and have a devastating impact on the environment, it also puts human life at risk.
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Still, these metals are what enable our precious smartphones and tablets to work so efficiently, so we have to get them from somewhere. But what if that somewhere was old gadgets we no longer want instead of deep within the Earth?
E-waste often contains more rare metals than mined ores. Studies show e-waste has 10 to 50 times the copper content than copper ore, and a phone contains 5 to 10 times the gold content than gold ore. Harvesting these precious metals from unwanted or broken gadgets is called urban mining, and it’s growing in popularity.
Pile of electronic waste image via Shutterstock.
Read more at ENN Affiliate CleanTechies.