By Petra Sorge and Akshat Rathi (Bloomberg) —

The science on tackling climate change is simple: zero out carbon dioxide emissions and global temperatures will stabilize. But a carbon accounting quirk might mean that, even if all countries meet that goal, pollution from shipping and aviation could result in continued warming.

The peculiarity exists because the current United Nations accounting system is focused on emissions generated within a country’s territorial boundaries. Ships and planes that emit CO2 outside the jurisdiction don’t usually get counted.