Protect our oceans

The introduction of electric cars will spark a heavy demand for cobalt, which is used to make the batteries that power these vehicles. To obtain this, we will have to dredge the ocean floor, which is rich in the metal – although it is not an inexhaustible source.

Just think of the damage this will do to our seabeds and the creatures dependent on this undisturbed terrain.

have we learned nothing from the way we have pillaged our planet for profit, which has brought us to the parlous state we are now in? We must not sleepwalk into another disaster, bringing us closer to making earth uninhabitable. DENiS BRuCE, Bishopbriggs, Dunbartonshire.