From Eric Kvaalen, Les Essarts-le-Roi, France
It is unfortunate that the study that found “dark oxygen” produced by metallic nodules on the seabed is having such a quick and negative effect on potential deep-sea mining. This form of mining may be the least damaging way to get the metals we need for the transition to a low-carbon economy. The ecological effect of “dark oxygen”, if it really exists, is probably negligible, and further research will clear things up.(Letters, 17 August)
