https://climate.nasa.gov › ask-nasa-climate › 3143 ›...

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    8 Feb 2022Water vapor is Earth's most abundant greenhouse gas. It's responsible for about half of Earth's greenhouse effect — the process that occurs when gases in Earth's atmosphere trap the Sun's heat. Greenhouse gases keep our planet livable. Without them, Earth's surface temperature would be about 59 degrees Fahrenheit (33 degrees Celsius) colder.

    Like I mentioned multiple times, whatever mankind thinks is a solution usually has some consequence!

    Will the hydrogen car turnout to be a future pollutant with it emission of water vapour’s etc.

    This is supposed to be a solution to ICE vehicle’s emission’s, even when the ICE was considered as a solution to the health and pollution in urban area brought by horses and bullock carts.
 
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