I understand that this is not the solution, we need to phase out gas-powered engines in order to reduce carbon emissions by 50% by 2030, and I understand that the filters would have to be changed and washed/recycled/disposed of constantly and couldn’t just sit on the tailpipe clogging up, I just don’t understand why a filter would be useless, wouldn’t it help just a little? Would it just ruin the cars? What about rooftop carbon capture devices? Is there nothing we can do to reduce pollution and carbon output from our current combustion engines?
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[Jeremy’s CO2 Greenhouse | Top Gear](https://www.youtube.com/watch?v=nz-Q-4RUd28)
Awesome little segment and Clarkson is always a hoot. But it does seriously highlight a potential technology and what the drawback is which is cost and replacement interval and the added weight which would burn even more fuel at the end of the day. The rocks featured are **Soda Lime Crystals** which do work in a high school chemistry class way but will not ever be a viable solution.
This is not to say that there aren’t other technologies out there that might be able to make a significant difference.
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