https://www.scientificamerican.com/article/immediate-climate-action-is-needed-to-avoid-grim-future-scientists-warn/ > A leading group of international climate scientists is warning that “large-scale strategies” are needed immediately to reduce greenhouse gas emissions and avert “catastrophic circumstances” that threaten every part of the world. > In a paper published yesterday in the journal Science, 21 researchers from 14 countries said climate change is already damaging the planet more than scientists had projected, endangering everything from food supply to the existence of island nations.