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Make steel and now we are producing ethanol using the technology. and there you can find a lot of synergy. the waste of one energy is a -- of the other. all sectors have to look into this and collaborate to one and one is three and not one and one is two in that case. it can gain a lot. >> reporter: hiring out the green energy transition and tackling aviation pollution, it is a team effort for european business leaders. >> and cnn will have extensive coverage of the cop26 conference in glasgow on air and online. for the latest, head to cnn.com/climate. so, polls are open for a couple more ho...