But, as with anything, it’s about nuance. You can read through the ingredients here[0] and tell me what you’d like in your body.
The earliest tattoos, from my understanding, were done by incision and rubbing carbon into the wound. Regardless if you use old or new inks/techniques, it’s not really cut and dry to say “this is bad/good” because the size of the particulates matter. For a tattoo shop that uses high quality ink, and is diligent in its sterilization, most inks are fine. The large molecules are “trapped” by your immune system to just stay there[1], making them not dangerous.
There is a ton of research on PubMed about tattoos, most being negative. However, I suspect it’s because the authors had a predisposition to be negative from the start based on how the research is conducted and what they focus on. But I could be wrong and you should make up your own mind.
Bottom line: if you get tattoos, pay the premium and go to a good shop. The hygiene and good products are worth it, if that’s your thing.
If space is “empty”, then how come we can measure the temperature of the microwave background radiation?
Think about it…any direction we point an apparatus, we will get a reading — the static of a radio IS the CMB, and if you could take that radio into space, and have the ability to travel anywhere, that radio would still have static. As such, space cannot be “empty”, it’s filled with photons, electrons, and quarks, amongst other things.
To reach 0 Kelvin would take an infinite amount of energy (infinite is not exactly accurate but might as well be), hence “stupid expensive”. It would also create holes in the CMB. CMB has no holes, as such, there is stuff everywhere.
Wait, why would the temperature at any finite point will always be zero? Because I’m quite confident it would be non zero as emptying space is stupid expensive.
And there is temperature inside a neutron, since it’s not a fundamental particle but composed of quarks: The neutron temperature T, on the Kelvin scale, is given by T = 2E/3k, where E is average neutron energy and k the Boltzmann constant.
Usually hydrogen peroxide[0] (when sliced) but if you are referring to what chemicals a farm uses, that would be really, really hard to provide. I believe Chipotle tried to do a farm to store supply chain doc and gave up and went with a distributor. However, they still are trying w/ robotics and other initiatives.[1]
At the end of the day, how do you really know what chemicals are used on the farm? The cost of tracking anything is astronomical. I.E. cost of a bolt in airline industry.
Lastly, at least for food: producers, distributors, end-users (stores), and everyone else uses different software with proprietary protocols and the margins don't really incentivize anyone from switching.
Just a shower thought.