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L’Afrique est un continent qui couvre 6 % de la surface de la Terre et 20 % de la surface des terres émergées. Sa superficie est de 30 415 873 km2 avec les îles, ce qui en fait la troisième mondiale si l’on compte l’Amérique comme un seul continent. Sa population de 1,3 milliard d’habitants classe l’Afrique deuxième continent du monde après l’Asie et représente en 2020 17,2 % de la population mondiale. Source : wikipedia
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Carbon Brief Staff
Tipping elements within the Earth system are increasingly well understood. Scientists have identified more than 25 parts of the Earth’s climate system that are likely to have “tipping points” – thresholds where a small additional change in global warming will cause them to irreversibly shift into a new state. The “tipping” of these systems – which include the Atlantic Meridional Overturning Circulation (AMOC), the Amazon rainforest and the Greenland ice sheet – would have profound consequences for both the biosphere and people. More recent research suggests that triggering one tipping element could cause subsequent changes in other tipping elements, potentially leading to a “tipping cascade”. For example, a collapsed AMOC could lead to dieback of the Amazon rainforest and hasten the melt of the Greenland ice sheet.
Historical responsibility for climate change is radically shifted when colonial rule is taken into account, Carbon Brief analysis reveals.
Global carbon dioxide emissions from energy use and industry could peak as soon as this year, according to Carbon Brief analysis of figures from the IEA.
Hopes of the UK government meeting its domestic and international climate targets have “worsened” over the past year, according to the CCC.
