Summary

For the past two years, scientists studying the health of forests, grasslands and swamps have been worried. Since 2023, the amount of carbon dioxide Earth’s landscapes have been able to absorb has dropped dramatically in the face of extreme weather, resulting in a record jump in atmospheric CO2 concentrations in two successive years. But 2025 has bucked that worrying trend, with preliminary research revealing a strong rebound in the land carbon sink and a corresponding decline in the growth rate of atmospheric CO2.

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