How Iceland’s fish-farms are helping to cut greenhouse gas emissions – from cows

A POLLUTANT in one context can help save the earth in another. Long regarded as an environmental threat, wastewater from Iceland’s land-based fish farms is now finding new purpose in other industries.

Some fish farms are working with agricultural companies to use the nutrient-rich water as fertiliser, or with energy firms to create energy-generating biogas. Turning aquaculture byproducts into valuable resources helps to minimise the industry’s environmental footprint.

Wastewater can even reduce the greenhouse gas emissions of other industries. One such collaboration involves Lava Seaweed, a startup that repurposes wastewater to grow seaweed for cow feed.