Bill Gates-backed mining company discovers vast Zambian copper deposit
Bill Gates-backed mining company discovers vast Zambian copper deposit
Bill Gates-backed mining company discovers vast Zambian copper deposit
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Related Knowledge Center: ENERGY BASICS: coal
The use of coal, a staple of heating and electricity-generation for decades, is in decline in the United States — supplanted by newly abundant production of natural gas — but is still dominant in some parts of the world. While economical, coal use is particularly problematic as international attention focuses increasingly on climate change.