Den fjerde vurderingsrapport fra Det Mellemstatslige Panel om Klimaændringer (IPCC) viser, at for at nå det mål skal de globale emissioner af drivhusgasser kulminere i 2020.
The Intergovernmental Panel on Climate Change's (IPCC) fourth Assessment Report shows that in order to reach that objective, global emissions of greenhouse gases must peak by 2020.