Cell phones are composed of gold, silver, platinum, and copper, which are all rare earth elements
that are in finite supply and drive the global extractive industry.
Sources of such rare earth elements are located all over the world, but
the majority of these mines are in China. Toxic mine drainage is
probably the biggest environmental concern associated with gold-mining
and it can displace communities, contaminate drinking water, hurt
workers, and destroy pristine environments. It pollutes water and land
with mercury and cyanide, endangering the health of people and ecosystems.
Unfortunately, the extraction of most metals and minerals exhibit
similar environmental impacts and there are currently no effective metal
substitutes for producing cell phones.
http://www.huffingtonpost.com/rosaly-byrd/the-environmental-footpri_b_5699007.html
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