Results for biogeochemistry

The size of oxygen-starved ocean “dead zones,” where plants and animals struggle to survive, has increased fourfold around the world, according to a new scientific analysis. “Oxygen is fundamental to life in the oceans,” said Denise Breitburg, lead author and marine ecologist with the Smithsonian Environmental Research Center. “The decline in ocean oxygen ranks among the most serious effects of human activities on the Earth’s environment.”