1. J.Ewald Carbon dioxide at NOAA's Mauna Loa Observatory Reaches New Milestone: Tops 400 ppm https://www.esrl.noaa.gov/gmd/news/pdfs/7074.pdf(accessed: June2019).
2. H.Kunreuther S.Gupta V.Bosetti R.Cooke V.Dutt M. H.Duong H.Held J.Llanes‐Regueiro A.Patt E.Shittu E.Weber Climate Change 2014: Mitigation of Climate Change. Contribution of Working Group III to the IPCC Fifth Assessment Report https://www.ipcc.ch/site/assets/uploads/2018/03/WGIIIAR5_SPM_TS_Volume‐3.pdf(accessed: June2019).
3. United Nations The twenty‐first session of the Conference of the Parties https://unfccc.int/resource/docs/2015/cop21/eng/10.pdf(accessed: June2019).
4. Irreversible climate change due to carbon dioxide emissions
5. C. D. of B. Research State of the Climate Reports2014 http://www.bom.gov.au/state‐of‐the‐climate/2014/(accessed: June2019).