Why deep-sea mining could be key to transitioning away from fossil fuels

As we know we are increasingly in a renewable revolution. with our energy being created by wind turbines and the cars we drive being powered by batteries Creating these products requires certain rare earth minerals, of which many are found deep on the ocean floor. But how do you extract these minerals from the sea and could it harm the environment in the process? Ivan discuss this and more with Andy Wheeler Professor of Geology at UCC.