Veille 2.1

Peut-on sérieusement atteindre la neutralité carbone d'ici la fin du siècle ? Dans cet article retentissant, trois économistes du climat reviennent sur les principales étapes qui ont popularisé l'idée de compensation des émissions de CO2 comme moyen de limiter le réchauffement. Analysant les échecs successifs de cette approche pourtant hégémonique, ils montrent qu'elle repose sur des hypothèses technologiques de plus en plus extravagantes

Humanity has swung a wrecking ball through the biosphere. We have chopped down over half of the world’s rainforests and by the middle of this century there may not be much more than a quarter left. This has been accompanied by a massive loss in biodiversity, such that the biosphere may be entering one of the great mass extinction events in the history of life on Earth.

By continuing to delay significant reductions in greenhouse gas emissions, we risk handing young people alive today a bill of up to US$535 trillion. This would be the cost of the “negative emissions” technologies required to remove CO₂ from the air in order to avoid dangerous climate change.