John Cuthber

He sought the advice of a mathematician who told him to work it out with a pencil.

Just a thought. As far as I can tell, there could be two "versions" of me. One has a tendency to open the blood vessels near the skin, and the other tends to restrict them. Both are capable of maintaining the same core body temperature ; but they have different "power requirements" (because they have different skin temperature). If both versions consumed the same number of calories, either one would gain weight, or the other would lose it. There are, of course, other possibilities for how a similar outcome could occur; gut bacteria variation would be an obvious place to look.

It's the reticule from an autocollimator. https://moeller-wedel-optical.com/en/product/reticles/ What were you thinking?

For a moment, I thought that looked like this. But it's probably just me...

Doesn't really work. Only the impurity atoms on the outside are exposed to the acid; the rest are effectively protected by being "gold plated". Density is a better option. Even this is pretty good. https://en.wikipedia.org/wiki/Touchstone_(assaying_tool) On a completely pointless pedantic note, there's (at least) one acid which will attack gold.

It seems that America isn't really "good" it's just "big". There are (if Google is to be believed) about 5300 universities in the USA. About 200 are on the "top 1000" list. That's about 3.8% There are 166 in the UK of which 25 are on the "top 1000" list which is about 15% France has 71 of which 27 are on the Shanghai list. 38% is impressive. Germany is confusing. "a total of 423 higher education institutions in Germany, including 108 universities, 211 universities of applied sciences, 52 colleges of art and music, 30 colleges of public administration, 16 theological universities and 6 colleges of education."

If the ammonia gets oxidised to nitric acid, then it will acidify the soil

If someone is deliberately exposing the world to organochlorine compounds, what are they hoping to gain and how are they avoiding poisoning themselves? A weapon needs a target; who is it?

It's going to spoil Christmas...

Though I made it humorously, the point I was making is very simple. They don't give you antibiotics unless you are sick. So the question is, which is likely to have a greater effect on fertility; the drugs or the infection? It's perfectly plausible that not taking the pills will leave you dead. And that's going to reduce our fertility much more than the drugs will. (An infection may also reduce it) Doctors and health insurance systems (private or nationalised) are fairly good at doing risk/ benefit analyses. Only focussing on the risks of antibiotics is just as foolish as ignoring them.

I checked the data. It turns out that every man who died from an infection is infertile.

I think you just discovered Kirchhoff's radiation law. https://en.wikipedia.org/wiki/Kirchhoff's_law_of_thermal_radiation

Ephermeral.

In all sensible probability, nine lives won't be enough.

Do you understand that those classifications are hierarchical? All rosales are rosids All prunus are rosaceae And all of them are plants