What are you on about? I’ve switched to LED bulbs about 10 years ago, and I’ve never had to replace a single one…

No, it also applies to residents only. Enjoy your stay in Hamburg, it’s a great city for a visit especially with dogs!

It only applies to Hamburg residents. Note that you are still required to observe all other Hamburg regulations concerning dogs; mainly: keep your dog on a leash outside of designated dog zones (it’s possible and common to get an exemption, but it requires you to pass a test and pay a fee - not something that’s worth it or feasible for only a week), and pick up after your dog.

I’d like to point out that the notion that most medieval Europeans never travelled beyond their place of birth is increasingly shown to be a misconception. Most peasants at least visited the nearest town frequently for trade and to attend processions for religious holidays, and many made a point of going on a major pilgrimage at least once in their live. There also the fact that people were often forced to relocate because of wars and famine, went on crusades, were sent away to learn a trade, or simply visited distant relatives. The thing that didn’t happen was tourism, which is how we mostly think of travel today. Here’s a medievalist’s perspective on it, and it’s not hard to find more sources if you go looking for them: https://medievallauren.wordpress.com/2020/12/02/medieval-myth-busting-travel/

Not sure if you’re joking or just having a slow day, but neither the length of a day nor the length of a year are arbitrary. One is the length of a revolution of the earth around its own axis, the other is the time the earth takes to complete a full run around the sun. Those two aren’t fully in sync, and to line them up would require a major feat of astroengineering. Given sufficient advances in science, we might get there in a few millennia, if we’re still around by then, but until then leap years are here to stay.

I read an article about that. IIRC it’s mainly because there is only minimal bloodflow in your teeth - barely enough to supply it with nutrients (and still not enough you should skip external flouride etc.).

DJ Krush for some instrumental hip hop/trip hop.

Can’t speak for the US, but here in Germany there often aren’t 12 monthly salaries to a year. Many people get a Christmas bonus and/or a summer bonus, but just as many don’t. Personally, I get paid about 13 1/4 monthly salaries a year, so telling you my yearly salary would be more accurate than the monthly amount.