investments like governments and defenses that can handle protected rises in fee levels. already the thames barrier defending london is being closed far more often than planned. i train that will continue as the polar ice caps melting raising the height of the oceans. with its network of tunnels under the river, the barrier was designed decades ago and may not be big enoughin decades ago and may not be big enough in future. the great steel gates are holding back a phenomenal volume of sea water that would otherwise enter the city and potentially cause disaster. which is why climate change matters so much here. constantly watching the projections for how much this he is going to rise and it's also why we will probably need a bigger barrier by 2070. some stretches of the coast are not so lucky. homes in norfolk are not so lucky. homes in norfolk are being lost to the fee. environment agency said they cannot