Flying is one of the most polluting activities; a single nonstop flight can emit more CO2 than a person in Cameroon yearly.
Biden admin is working on cleaner aviation, including using corn-based ethanol for sustainable jet fuel, despite its divisive environmental benefits debate.
Ethanol sparks disagreement among experts for its impact on greenhouse gases; some argue it reduces emissions while others maintain it may increase them.
Air travel emits pollutants beyond CO2, like nitrogen oxide and soot, contributing to global warming along with contrails, making the pollution impact more significant.
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