A study from the University of Queensland led by Scott Spillias finds that expanding seaweed cultivation could help address food security, biodiversity loss, and climate change by reducing demand for land crops and cutting agricultural greenhouse gas emissions. The research uses the Global Biosphere Management Model to explore the potential of 34 commercially important seaweed species, showing that if 10% of global nutrition was replaced with seaweed-based products, 110 million hectares of land could be spared for agriculture. The study also points out the suitability of the Indonesian and Australian exclusive economic zones for seaweed farming, highlighting the need for careful implementation to avoid shifting problems from land to the ocean.