Head of United Nations seabed authority warns unilateral action would violate international law and undermine multilateral efforts to govern the world's oceans. A Vancouver-based company said it is seeking approval under United States law to mine several deposits in the Pacific Ocean — a move that could set up a collision with a United Nations body that governs who can exploit resources deep under the sea. The Metals Company stated it would pursue regulatory approval under the U.S. Deep Seabed Hard Mineral Resources Act to mine two deposits several kilometres below the ocean's surface between Hawaii and Mexico, according to...