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There are already examples around the world where the manufacturer helps to pay for the safe disposal of waste from their goods once used - such as electronic items or bottles. But what about the carbon dioxide produced from fossil fuels?

Tom hears about the 'Carbon Take Back Obligation' concept - in which oil and gas producers would have to capture and store C02 - ratcheting up from 1% of what they produce by 2023, to 10% in 2030 and 100% by 2050. Some say it's impossible to meet the aims of the Paris Climate Agreement without it.

But where would all that carbon dioxide go? How much storage space would we need for it and how much of the cost would trickle down to the petrol pump?

Dr Tamsin Edwards of King's College, London, armed with statistics gathered by the Royal Geographical Society, joins Tom to add up the numbers.

Producer: Anne-Marie Bullock

Researcher: Sarah Goodman

Produced in conjunction with the Royal Geographical Society. Particular thanks for this episode to Professor Stephen Peake of the Open University and Dr Chris Hope of the University of Cambridge.

For more information on the Carbon Take Back Obligation www.carbontakeback.org