Artificial intelligence has helped scientists produce the first comprehensive global assessment of floating algae, revealing that blooms are spreading across much of the world's ocean. In the open ocean, floating algae can form important habitats and nursery grounds for marine species, potentially supporting fisheries. 1.2 Million Satellite Images AnalyzedHu and his colleagues used artificial intelligence to examine 1.2 million satellite images covering the global ocean. The team trained a deep learning model to recognize subtle visual signals associated with algae floating at the surface. Warming and Nutrient Runoff May Fuel GrowthThe study linked the spread of floating algae to a combination of human activity and natural climate variation.