Seaweed: sustainable and local
Millions of tonnes of seaweed are produced all around the world every year.
Some of it is for human consumption, but seaweed is also used in things like artificial fertiliser
and cattle feed. Current production methods are not always sustainable, but seaweed does have the potential to be a local, sustainable product. It does not need any land or fresh water, and seaweed farming can easily be combined with fishing, shipping and offshore windfarms. Seaweed also purifies the air by converting CO2 to oxygen, and it can provide a sustainable source of energy.