By Douglas McCauley and Paul DeSalles
(The views expressed are those of the authors, not necessarily Mongabay.)
1. U.S. Drops Out of Paris
In our 2015 ocean top 10 list, we celebrated the adoption of the Paris agreement as a monumental achievement for slowing the warming, acidification and deoxygenation of our global oceans. In 2017, remaining nations like Afghanistan, Nicaragua and Syria ratified the agreement, bringing the total number of ratifying nations to 171. But in a radical about-face of global leadership on climate action, the Trump administration officially declared that the U.S. would withdraw from the Paris agreement, citing unfair impacts on the American economy.