Fish farms regenerating the environment
This World Economic Forum clip looks at a sustainable fish farm that actually helps regenerate the environment rather than damaging it.
A reduction in the intensity of production has mean that they no longer require antibiotics to keep the fish healthy and lower levels of environmental stress mean that the farm actually serves to improve water quality and absorb carbon.
And whereas one Spanish fish farm appears to be resolving environmental problems, in the UK the poor performance of the country's water firms as regards pollution is threatening fish stocks.
As has happened previously South West Water, Anglian, Northumbrian and Southern Water are heavily criticised for their lamentable attempts to limit pollution and some critics speculate that the privatisation of the sector, and a focus on profit has necessarily compromised the companies' environmental performance.