Have a look at some of the treasures at the Louvre.
A link to
the Louvre
[If that link is broken, try http://www.louvre.fr/en ]
This is a link to pages of information about our artificial
satellites
Satellites
As an old US Army (and current) pilot, it is still interesting to listen
to a busy FAA tower. Here is a link that includes audio at
several diffeent airport towers.
Volunteer work after retirement was with Kempton Air, at Grand Junction Regional Airport. But Kempton Air is now closed, and the web page is just a phone number.