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Presenter Oliver Hides takes a ride in an electric car, called the Rasa, that is powered not by batteries but by a hydrogen fuel cell.聽
The car's creator, Hugo Spowers, sees motoring switching to hydrogen from fossil fuels, and he has developed a payment model for his car that he believes can put the automotive giants out of business.
Dr Erica Thompson lives with her family on a so-called One Planet Development in Carmarthenshire and explains how a low carbon impact lifestyle for her - and perhaps thousands more - has a part to play in the response to climate change.
And Welsh School of Architecture researcher Dr Jo Patterson explains how existing properties can be retrofitted to cut their energy use.
The programme also hears from Future Generations Commissioner Sophie Howe and former Environment Minister Jane Davidson on the role the Well-being of Future Generations Act has to play in framing the way policy decisions are made from now on.