On the first day of the United Nations Ocean Conference in Nice, France, the findings of a new study have revealed that ocean acidification (OA)—which damages ecosystems like coral reefs—is not only getting worse, but crossed its “planetary boundary” roughly five years ago.

Oil-producing nations led by Russia, the U.S. and Saudi Arabia reached an unprecedented agreement on Sunday to cut oil production by 9.7 million barrels per day, or nearly 10 percent of what is currently produced, as The New York Times reported.