Correction to: Nature Climate Change https://doi.org/10.1038/s41558-019-0421-0, published online 25 February 2019.

In the version of this News & Views originally published, the linked paper was not included in the reference list. The correct reference is Le Quéré, C. et al. Nat. Clim. Change 9, 213–217 (2019). This has now been added as reference 4 in all versions of the News & Views.