I use Mac most of the time and I’ve found that the functionality on Mac has largely started following how 1Password works on Linux. Meaning that the desktop app functions as a standalone app to modify your password records and the browser plugin allows you to access or lightly edit those records. Older versions would let you call the desktop app with a simple plugin but since I switched to the 1password.com version that’s no longer the case. If you’re on 1Password 7 then what you’re saying makes sense.
As an aside, the function I use by far the most on Mac is command-shift-space to pop up a password search dialog that works very well. Not sure if that function exists on Linux.
Looks like the US has one in Tennessee, place called Raccoon Mountain, in the 1970s. At the time, the power source was to be nuclear. Another large scale project is being built near Seattle, with enough stored energy for 12 hours of electricity for every residence in Seattle. Pretty cool that such a conceptually simple technology can solve these problems.