Seaweed could play a vital role in addressing current sustainability challenges. It could also offer a solution to potential future threats to global food security, such as sun-blocking volcanic eruptions, asteroid impacts or a nuclear winter.

With proper planning and the use of the most fertile areas, algae cultivation could produce the equivalent of 45% of the world's demand for food for human consumption. With the right vision and preparation, it would be possible to rapidly expand seaweed aquaculture when necessary. Investing now could be crucial to avoiding global hunger in the face of an abrupt reduction in sunlight. By adopting the ancient practice of seaweed harvesting, we could take an important step towards sustainability and sustainability in times of uncertainty. The real challenge is how quickly we can build these algae farms so that they have a significant impact on the world’s food supply. It is a game-changer, offering immediate benefits to human and environmental health. Algae cultivation offers a simple, versatile and ecosystem-friendly method to efficiently produce nutritious food.