There is nothing subjective here, it's knowledge of biochemistry and manufacturers use of good practices. Of cousre, this is impossible on large scale production, yet you could be sure that your local milk providers milk will just become something else upon curdling, and your local butchery vacuum sealed bags are as clean from pathogens as their line and are good far beyond expiration date, but will change. And that things were stored correctly and are not blooming with thermophiles inside. I do not mean nutritional content, I only address industrial labeling and its purpose. And things that could not possibly be regulated, and have to rely on community (in many forms, from "lets love each other" to "I will break your face if you burn me, pal"). Eating expired stuff is an act of trust, whether it is trust to chance and supernatural, or trust of community that builds cultural value, is a whole different question.
Then you can always inoculate food yourself before expiration, but then it counts as cooking I guess.
There is no "expired", only "improperly fermented". Sure, it could be very bad, but then you should've paid attention to it in advance, respect the nutrient and all living things who brought it about.
I did quit after getting PhD, which simplifies changing citizenships and getting some kind of funding a lot. Now I'm trying to figure out whether PhDs are like knights - would anyone recognize PhDs if I find a committee of 3 to grant them (I already have 2)?
This is pretty much how I left academia lol, took me 10 years to build a lab and get a tenure (european citizenship, with social benefits and stuff), regret nothing.
But, as far as I remember, major contributor to carbon emissions are not poor villages, but jet sets and their factories in poor villages exploiting the work of poor villagers who have no say about their air quality lest they lose their jobs like they lost their means to sustain themselves from farming. Indeed, just not flying for fun and not selling the oil and coal that do not really belong to them would be so much more technological than trying to get grants for things they do not understand (and waste them traveling the world on planes telling everyone they should invest in it too only to then burn the rest in taxes used to support oilgascoal industry directly or not). When you show perpetum mobile here it is totally relevant - that's how greenwashing works in terms of economy on every level, no matter what technology is being praised.
That's essentially how many gases are made from mixtures, like notrogen or oxygen. Showing this as something new tells a lot about author's uderstanding. Carbon capture is not about making entirely new tech, it's optimization, and that's where startups suck at everything except for getting and then wasting cash.
After hanging out with Veselago I'm not sure I can handle the concept of "reflective-only" elements.