> They have even created hybrids of matter and antimatter, in which a nucleus containing protons is orbited by negatively charged antiprotons. In short, you can have regular hydrogen, muonic hydrogen, kaonic hydrogen, antiprotonic hydrogen, and so on.
Most of them live for a very short time, less than a millisecond. If you want to start with something that you can buy and put on your desktop try https://en.wikipedia.org/wiki/Heavy_water But beware that it's almost identical to normal water. (The other variants discussed in the article are more different but very expensive and short lived.)
Learning over Zoom with a real person using a service like Fiverr or something was a great way for my wife and I to start learning Indonesian.
Learning sign language was lots of fun in VRC with actual people. I'm actually going to visit a friend I made doing this, in his country, this weekend.
https://abc.xyz/investor/board-and-governance/google-code-of...
Look. It's right there. Still. It was moved, not removed.
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