https://cleantechnica.com/2022/04/01/global-shipping-less-of-co2e-problem-today-than-aviation-more-by-end-of-century/

https://cleantechnica.com/2022/10/05/sexy-unsexy-practical-impractical-decarbonizing-marine-transportation-has-hype-dogs-as-well/

https://cleantechnica.com/2023/03/16/another-hydrogen-for-energy-play-predictably-fails-this-time-in-marine-fueling/