“These days, most batteries for electric vehicles are based on cobalt — a dwindling element sourced from mines that often employ child labor and other unethical practices.

Now, a team of MIT engineers say they’ve found an alternative, according to New Scientist: using a beach ball-like apparatus hanging from abandoned oceanic oil rigs, it may be possible to absorb enough cobalt to build hundreds of thousands of batteries for Teslas or other electric cars…”

Source: https://futurism.com/the-byte/cobalt-ocean-tesla-batteries