- April 21: European Union to reduce carbon emissions by 55% of 1990 levels by 2030
- November 27: Wikinews interviews Craig Farquharson, Liberal Democrat candidate for 2020 Groom by-election
- November 26: Wikinews interviews Sandra Jephcott, Sustainable Australia candidate for 2020 Groom by-election
- December 12: Greta Thunberg named 2019 Time Person of the Year