As a kid I am sure that made more sense than “to save the planet a little”.

A thousand-mile journey begins with the first step. Even a little helps.

With the obesity epidemic it is probably better to tell people they can just compost their food if there is too much and they can't eat it. And then cook a little less next time.

I keep 100% of foodstuff out of my trash, and an added benefit is that you never get stinky trash that needs to be taken out. I take my trash out every 2 weeks and it never smells at all.

My parents regularly throw out spare food (bread, meat, fruit) onto their lawn, local wildlife (birds, foxes, hedgehogs) always take it all within 24h.

Not much wilflife about it then.

I seperate my compostables as well. I don't even use a trash bag in my bin anymore. My trash bin fill up so slowly that I go months without taking it to the street.

My uneaten food went into the fridge for my next meal as a kid.

Sorry you had abusive parents

Eating leftovers is perfectly fine, and a hell of a lot less wasteful than dumping it in the compost.

IMO leftovers taste better than the original meal.

How do you deal with meat leftovers? You can compost plant remains but meat becomes another issue.

Find a neighbor with a carnivorous pet.

Alternatively, eat less (or no) meat; it's good for the environment: https://ourworldindata.org/food-choice-vs-eating-local

OTOH the 80/20 rule for optimization says to not waste effort on tiny inefficiencies.

My local landfill now taps that methane and powers generators with it.

That's what the landfill transitioned to. I believe it now powers all the buildings onsite.

When I was still at school, I had occasion to tour the local sewage treatment facility as a field trip. They had equipment to power all the buildings on site with captured methane, but did not use it, because it was cheaper to just buy electricity from the grid supplier than it was to operate and maintain the generator with free methane fuel. (The methane was still burned.)

The awful thing is that the greenhouse gas emissions involved in manufacturing the generator and maintaining it might have been significantly greater than the emissions due to the grid electricity. Not all these decisions are simple.

Better might be to capture the methane and use it to supplement residential natural gas. Here in BC you have the option to convert any percentage of your residential NG usage to 'biogas' AKA methane. (You just need to pay the higher cost for the gas.) Technically it doesn't change what comes out of your pipes, but they purchase and inject into the system an aggregate amount of biogas equal to what's purchased by customers. So you're directly offsetting burning of NG by instead using the methane that would, best case, be burnt anyway. Of course there is some waste in storage and transportation and such still, but seems like a win. At least, until all the 'free' landfill methane gets used up, and people start creating methane farms.

It's hardly clear that building, installing, and maintaining all the equipment necessary to do that would require less energy than the methane they are wasting.

To a rough approximation, the fact that no one found it financially worthwhile already tells you that you need a ton of resources to make it happen.

Seems like in the US there are 500+ landfill gas projects operational with about another 500 possible sites - so not exactly no one.

https://www.epa.gov/lmop/basic-information-about-landfill-ga...

Remember to factor in that capturing the methane and burning it is in itself a substantial good in the greenhouse gas equation. Methane is an extremely potent greenhouse gas if allowed to release in its raw form, far more so than CO2 and water vapor - the products of its combustion.

https://www.factcheck.org/2018/09/how-potent-is-methane/