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Why Pythagoras almost destroyed the world! And think of the trouble learning to count has caused!

The right to commit suicide ought not to be taken away from mature citizens. Consultation houses have to be established especially for this purposes to give Pause and Reason enough to the suicidal(s). There is even no reason why they should not be assisted in doing it "perfectly". However , with the statistics indicating that at least two thirds of suicidals committing actual suicide become repentant [very] soon after that ( ie, before their final death) , a moratorium is of vital importance before somebody takes their own life....

We hear about so called "islands of stability" in super heavy elements, what does this mean exactly? Can we really expect super heavy stable elements or are we talking about elements with half lives more like minutes or hours instead of nanoseconds?

LOL, what are you going to do; wish me to death? "I got up half an hour before I went to bed"... 😉

It's the second case. Elements that aren't stable, but relatively more stable than you would expect for such a heavy element.

In cosmetics, powdered titanium dioxide is used to block UV rays, so how is it "reacting" to UV? It's being investigated as a carcinogen: https://www.independent.co.uk/news/science/toothpaste-additive-e171-titanium-dioxide-food-products-cancer-cause-scientists-a7541956.html

It’s based on the shell model of nuclear structure A filled shell of neutrons or protons is a low-energy state, and isotopes tend to be stable against decay (especially beta decay), and you tend to have more stable isotopes with filled shells. (the atomic analogue is noble gases) So e.g. Sn, with 50 protons, has 10 stable isotopes. Pb, which has 82 protons, has 4 stable isotopes. 126 is also a magic number (Pb-208 is doubly magic). It’s thought that having 126 protons might at least have a longer half-life than nearby isotopes.

I wouldn't.