The aviation sector is a top-ten global emitter and for 4.9% of the warming impact on the Earth.
Aviation’s climate impact is not restricted to its CO2 emissions—more than half of aviation’s climate impact comes from non-CO2 effects. Planes release other greenhouse gases and water vapor into the atmosphere, which create warming feedbacks.
The sector’s emissions have already risen dramatically since 1990 and are expected to grow exponentially by mid-century.
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