In a display cabinet in the recently opened Our Broken Planet exhibition in London’s Natural History Museum, curators have placed a small nugget of dark material covered with faint indentations. The blackened lump could easily be mistaken for coal. Its true nature is much more intriguing, however.
The nugget is a polymetallic nodule and oceanographers have discovered trillions of them litter Earth’s ocean floors. Each is rich in manganese, nickel, cobalt and copper, some of the most important ingredients for making the electric cars, wind turbines and solar panels that we need to replace the carbon-emitting lorries, power plants and factories now wrecking our climate.
These metallic morsels could, therefore, help humanity save itself from the ravages of global warming, argue mining companies who say their extraction should be rated an international priority. By dredging up nodules from the deep we can slow the scorching of our planet’s ravaged surface.
‘‘We desperately need substantial amounts of manganese, nickel, cobalt and copper to build electric cars and power plants,’’ says Hans Smit, chief executive of Florida’s Oceans Minerals, which has announced plans to mine for nodules.
‘‘We cannot increase land supplies of these metals without having a significant environmental impact. The only alternative lies in the ocean.’’
Other researchers disagree, vehemently. They say mining deep-sea nodules would be catastrophic for our already stressed, plastic-ridden, overheated...
Read Full Story: https://www.odt.co.nz/opinion/cure-or-curse-deep-sea-mining
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