If a weed is a plant whose virtues have not yet been discovered, then seaweed is ready for rebranding. This food source, underutilized in the Western world, is rich in vitamins and minerals such as iron and iodine. To cultivate, it requires no fresh water, no land, no chemical inputs, and no fertilizers, and it creates no nitrogen runoff. Furthermore, sea vegetables sequester carbon as they grow, helping to combat the effects of global warming and mitigate ocean acidification. When it comes to feeding a global population of 9.7 billion people in 2050, seaweed could play a large role in finding sustainable solutions.