In 2014, the threat of global starvation and famine is still very real. Between 2010 and 2012, for example, more than a quarter of a million people in Somalia died as a result of a famine caused by drought and exacerbated by conflict.
Climate change, rising food prices and political instability can combine to create an increasingly risky situation when it comes to ensuring everyone is fed. With the global population estimated to reach 9 billion by 2050, producing food that is affordable, sustainable and nutritious will become ever more important to governments.
Could aquaculture – the farming of fish – be the answer? According to the World Bank, by 2030 62 percent of the fish we eat will be farmed. Fish, according to the Bank, could play a major role in providing the world's poorest with a sustainable source of protein.
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At Sainsbury's, one of the U.K.'s leading supermarkets, executives have made a commitment that by 2020, all the fish it sells 'will be independently certified as sustainable'.
"Half of the fish consumed globally now comes from wild capture, and half is from aquaculture," Ally Dingwall, Aquaculture and Fisheries Manager, Sainsbury's, told Episode 5 of CNBC's Industrial Revolutions. "The growth in the future for fish is going to come from aquaculture operations, and therefore it's really critical that those operations are well-managed," he added.
Making sure that aquaculture operations are sustainable and technologically advanced is key.
"Innovation is central to farming going forward," Dingwall told CNBC. "All of our farms, for example, have cameras in each pen so that we can monitor the feed input, and reduce wastage of feed, therefore delivering better efficiency and [a] more sustainable farming operation [with] less impact on the environment."