I'm all for reducing airborne pollutants as long as it makes sense from a market and economic perspective. An example is hydrogen as a fuel source.
Current technology requires sourcing hydrogen from fossil fuels. While there is an abundant source of hydrogen in seawater, the process of breaking seawater down to hydrogen creates ammonia as a by-product. Not good from an environmental perspective. The high salt content also tends to corrode the equipment involved in the process.
Now comes research out of Australia where scientists have developed a novel process that cheaply converts seawater to hydrogen without the nasty by-products. I don't pretend to understand all of the chemistry behind this process. The process has been patented, though, and I'd love to see some start-ups take this and run with it.
A cheap, clean and nearly unlimited energy source. This could be a game-changer.
https://onlinelibrary.wiley.com/doi/...smll.202207310