Nature-based solutions: Hype or real climate hope? A look at NbS in the Global South

Nature-based solutions (NbS) like green roofs, urban forests, and constructed wetlands are being added to climate targets worldwide. But how effective are they, especially in the Global South? This article examines the real benefits and limitations of NbS, including tree planting for carbon offsets and wastewater treatment. Experts warn that many projects are undersized, poorly planned, or just nature-based decoration, not real solutions. Key issues include a lack of scientific foundation, copy-paste vegetation with no native species, and the assumption that nature requires no maintenance. Afforestation for carbon sequestration can have side effects on biodiversity and livelihoods. The article argues that NbS can offer co-benefits like cooling, habitat creation, and property value increases, but they are not a substitute for addressing root causes like industrial pollution or fossil fuel emissions. For carbon markets and climate finance, the takeaway is clear: NbS must be properly designed, sized, and maintained to deliver real decarbonization. Without rigorous standards, they risk becoming greenwash. The piece is a grounded, critical look at a widely promoted climate tool.