Ocean warming threatens our oxygen supply

TakePart : "Marine plants such as phytoplankton are estimated to produce more than half the Earth’s atmospheric oxygen, according to the National Oceanic and Atmospheric Administration. For the study, Sergei Petrovskii, an applied mathematics professor at the University of Leicester in the United Kingdom, calculated how unrestrained global warming could affect phytoplankton and thus the ocean’s ability to generate breathable air. He ran computer models that looked at what would happen to phytoplankton’s ability to photosynthesize at different temperatures."