PNAS is the world's most-cited multidisciplinary scientific serial. It publishes high-impact research reports, commentaries, perspectives, reviews, colloquium papers, and actions of the Academy. In ...
A market-ready, zero-emission aircraft by 2035, carbon-neutral scheduled collective transport for journeys under 500km by 2030, and possible quotas on low-carbon fuels are among the goals set by the ...
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