The problem with rare earths is not that they are really rare [0]. Many of them are pretty common in the earth crust. The real problem is that they only occur i

The problem with rare earths is not that they are really rare [0]. Many of them are pretty common in the earth crust. The real problem is that they only occur in low concentrations, and it takes a lot of energy and environmental damage to harvest them. Using bacteria seems very interesting. [0] https://en.wikipedia.org/wiki/Rare-earth_element https://en.wikipedia.org/wiki/Rare-earth_element