A #Mongabay investigation shows U.S. deep-sea mining claims in the Pacific now equal half the area managed by the U.N. International Seabed Authority. These overlapping high-seas claims spark intense legal conflicts and threaten fragile deep-sea ecosystems. Learn more in this story by Elizabeth Claire Alberts and Andrés Alegría. https://mongabay.cc/K8CqDK #DeepSea