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tibu | 3 years ago

Rare-metals used in batteries are much problematic then steel and Al.

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jhp123|3 years ago

Steel is very problematic. 90% comes from China. Proven reserves of iron will run out at some point and we'll need to find new ones. Smelting uses coal. Iron mining is environmentally destructive.

_hypx|3 years ago

Iron is one of the most common elements in the Earth's crust. It is not going to run out.