1. Kahan A. EIA projects nearly 50% increase in world energy usage by 2050, led by growth in Asia. https://www.eia.gov/todayinenergy/detail.php?id=41433#:~:text=Worldwide%20renewable%20energy%20consumption%20increases,growth%20in%20natural%20gas%20consumption. 2019.
2. Global monitoring laboratory. https://www.esrl.noaa.gov/gmd/ccgg/trends/gl_data.html.
3. U.S. energy information administration. https://www.eia.gov/totalenergy/data/monthly/pdf/flow/css_2019_energy.pdf. 2019.
4. Global monitoring laboratory. https://www.esrl.noaa.gov/gmd/ccgg/trends/gl_data.html.
5. PEM fuel cells: thermal and water management fundamentals;Wang;Sustain Energy,2013