Resumen de Sea change
After an absence of 800,000 years, Neodenticula seminae, a native of the Pacific Ocean, had showed up unexpectedly in the North Atlantic. Marine biologists speculated that this tiny species of plankton had drifted through the Northwest Passage, which until recent summers had been blocked by a permanent wall of ice. A study published found that dissolved oxygen levels in the water are falling. Another suggests that the plankton crucial to maintaining the balance of gases in Earth's atmosphere are in trouble. Some researchers think this new information points to geoengineering approaches that could solve the problem of climate-changed oceans
