NASA satellites show the Earth is becoming greener.
Since the early 1980s, global leaf area has increased about 15%. That equals roughly 2 billion hectares of additional vegetation, an area twice the size of the United States.
Vegetation is expanding into semi-arid regions and agricultural productivity is rising.
At least 70% of the greening is driven by rising CO2. Higher CO2 allows plants to photosynthesize more efficiently. More CO2 means more plant growth.
The planet is not browning, it is greening.