5

It depends on how you define "pollution". Cargo ships use some of the dirtiest fuels available: bunker fuel is basically what's left over after you refine all the good stuff out of crude oil. It's got all sorts of contaminants that something like gasoline or jet fuel doesn't have. On top of that, there are basically no regulations on emissions by ...


3

I don't have any data for your area but this research from the University of Oxford suggests leakage of 0.39Mt of methane annually from gas mains in the UK. (By way of comparison, agriculture produces 0.91Mt and decomposition of waste in landfill produces 0.46Mt). The most recent consumption figures I could find came from this page which suggest a total ...


2

"Obviously, it would be most ecologic to leave the coal where it is. But since this does not happen..." Actually, there are some who would like to buy the coal in the ground and leave it there as part of an environmentalist strategy, as explained in the 2014 paper "Buy Coal! A Case for Supply-Side Environmental Policy" by Bård Harstad. ...


2

In the Netherlands gas boilers have been banned in new construction since 2018. In the UK and Austria gas boilers will be banned in new construction from 2025.


2

When I bought a portable air conditioner unit, I was happy to see some genuine progress made in the refrigerants. Long time ago, I bought my older portable air conditioner unit and it used R410a as the refrigerant. It consists of artificial hydrocarbons that have some hydrogen atoms substituted with fluorine. Apparently it doesn't cause ozone depletion which ...


1

It seems the later models of refrigerative air conditioners (heat pumps) use refrigerant R-32. Freon, also known as R-22, is not being used by the major manufacturers for new air conditioners. R-32 doesn't affect the ozone layer. The following picture is from a manufacturers website. It's just a convenient visual of the similar data in tabular format. Some ...


1

Almost certainly Aotearoa will phase in a ban from 2025. Currently a draft plan but likely to go ahead: https://www.stuff.co.nz/business/green-business/124127933/choosing-gas-for-new-homes-could-be-money-down-the-drain-says-consumer-nz


1

In the United States Many cities in the U.S. state of California The Sierra Club has a list of 42 cities in California that have implemented some form of ban on natural gas in new construction. The list includes a brief snippet about the specifics of the rules, and links to the relevant legislation. They provide this chart showing the impact of these ...


1

In addition to the excellent answer by @LShaver, other things to consider are: Delivery of gas to the premises My experience is that there is only one reticulated gas main in residential areas and that such mains supply methane. Similarly, the use of propane requires the use of on site pressurized gas containers which either have to be replaced with full ...


1

According to Wikipedia: Propane is produced as a by-product of two other processes, natural gas processing and petroleum refining. The amount from petroleum refining is minimal. The U.S. Energy Information Agency provides detail about how much propane (a hydrocarbon gas liquid) is produced by each source: Continuing from Wikipedia, if propane wasn't ...


1

My question is, what good ways are there store/sink coal? Just sinking large quantities of coal in the oceans is probably be a bad idea, and can have disastrous side effects. So what is known in this direction? You are correct, buying coal and trying to sink it into oceans is a bad idea. Your other idea, to leave coal in the ground as nature created it, ...


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