Cant Open U3A Web Site From a Mac
If your Macintosh computer is a bit old, you may get a error message similar to the following when you try to access the U3A web site using the Safari browser ...
Safari cant open page "https://u3asites.org.uk/thornbury/home" because Safari cannot establish a secure connection to the server "u3asites.org.uk"
This is because the browser doesn't support the newer version of the https protocol used by us3sites.
The solution, apart from upgrading your computer, is to use the Chrome browser (which you might already be doing in order to read this page!)