[everybodyknows]

Testing the above "104 degrees" example in Firefox just now, I get:

  Last year MIT handed out 104° to wombats

Pasting back into Emacs, "M-x describe-char" says:

  code point in charset: 0xB0
  ...
  file code: #xC2 #xB0 (encoded by coding system utf-8-unix)
  ...
  name: DEGREE SIGN