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	Podcast:		Costing the Earth
	Episode:		Oceans of Acid
	Category:		Religion & Spirituality
	Duration:		00:27:50
	Publish Date:		2015-09-22 09:24:00
	Description:		As the oceans absorb manmade carbon emissions a chemical reaction takes place which is making sea water more acidic. This subtle shift in pH level is having a profound effect on the sea animals which use calcium carbonate to form their shells and skeletons and Marine Biologists are now discovering that this could have implications across the world's oceans. Already shellfish industries in America are being adversely affected and scientists are working hard to predict how the world's fisheries might respond in the future. Professor Alice Roberts discovers there are surprising lessons to be learnt from the past and hears why immediate action is needed to prevent further threats to biodiversity. Producer: Helen Lennard.
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