Celine Guivarch: The report does not cite just 3 measures, but a set of mitigation options for all sectors (transport, buildings, industry, agriculture and food, energy systems). The options are of various natures (technological, but also transformation of modes of production and consumption, infrastructures, social organizations). The report clearly shows that only by collectively mobilizing a set of options will we be able to avoid the most serious effects of climate change.
The bouquet of options mobilized is obviously left to public and political debate, and it will depend on the specificities of the different regions of the world. Globally, the report shows that options available today, if taken collectively, can roughly halve greenhouse gas emissions by 2030 at a reasonable cost (less than $100 per tonne CO2-equivalent avoided). They are given in figure 7 of the summary.
They include, for example (this list is not exhaustive, I invite you to refer to the figure in question): the deployment of solar energy, the preservation of ecosystems (avoid conversion, artificialization), reforestation, reduction of food waste, insulation of buildings, transfer of transport to modes with little or no emissions (rail, public transport, cycling, walking), electrification of vehicles, energy efficiency and ” matter “ in industry…