The article examines the intersecting challenges of climate change and rising global interest rates. Following a summer of extreme heatwaves across Europe and North America, the economic costs of global warming are becoming increasingly visible through parched fields, strained electricity grids, lower labor productivity, and rising insurance losses. Scientists warn the planet is warming faster than previously feared, making adaptation more urgent. The financing challenge is greatest in emerging markets and developing economies, which house most of the global population but have insufficient domestic savings to fund the necessary climate investments. On current trends, greenhouse gas emissions from these regions are projected to rise from 42% to 53% by mid-century, threatening global climate goals.

A critical barrier to climate action is the rising cost of capital. The Baku-to-Belém roadmap estimates emerging and developing economies need $1.3 trillion annually in external funding by 2035. However, long-term bond market rates have risen sharply due to investor concerns over rich countries' fiscal sustainability. With public debt in wealthy nations near 110% of GDP and projected to reach 190% in the US by 2050, higher interest rates make climate investment in poorer countries less affordable. A Bank for International Settlements study found a 1 percentage point rise in US Treasury yields historically causes a 1.5 point increase in emerging market yields, currency depreciation, and significant fund outflows. As fiscal indiscipline in the rich world hampers climate finance, the upcoming COP31 summit in Antalya faces pressure to deliver tangible progress, as multilateral banks and bilateral aid alone cannot bridge the funding gap.