3 ms·

Pareto principle in action - remove the bulk of tailpipe particulate emissions, and the previously negligible other particulates take a larger share.

• IngvarLynn 6y ago
  In typical ICE scenario tailpipe accounts only for a half of particulate emissions, another half comes from from brake, tyre and road wear. http://publications.jrc.ec.europa.eu/repository/bitstream/JRC89231/jrc89231-online%20final%20version%202.pdf http://publications.jrc.ec.europa.eu/repository/bitstream/JR...
  • csours 6y ago
    Yes, that's true now. I wonder if it was true in 2000 for instance or 1990? Probably not in 1980.
  • ehnto 6y ago
    Which reminds me of a video of Cody's Lab, where he refines precious metals out of roadside dust: https://youtu.be/v5GPWJPLcHg https://youtu.be/v5GPWJPLcHg
• hinkley 6y ago
  It's a failure of priorities that I see a lot at work and push back on. The need to act is based on the magnitude of the problem relative to your desired outcome, not relative to the current state of affairs. If you don't do this at the beginning, then 'new' things will pop onto the list as you go along, resulting in solutions that are anywhere from suboptimal to maladaptive. Looked at holistically, you might notice that 3, 5, 7 and 8 all have the same root cause, and taken together they may be the 1st or 2nd largest problem. They may also be easier to fix. But no, we're gonna start at the top and work our way down until people get tired of hearing from us.