Professor Moffett's Science Workshop ended on 1974-03-04.
Workshop - series - ended on 2011-05-10.
Producers' Workshop ended on 1955-09-02.
Game Designers' Workshop ended in 1996.
Hobby Workshop ended on 1955-06-31.
Dr. Wonder's Workshop ended in 2010-11.
The New Yankee Workshop ended on 2009-06-27.
Professor Balthazar ended in 1978.
Downing Professor of Medicine ended in 1930.
Everything will eventually come to an end, however no sign has been given by Games Workshop which suggests it will end soon.
No, Professor Layton does not die at the end of the 3rd game, The Lost Future. Look out for the Spectres Flute, game four which obviously includes Professor Layton and Luke Triton.
Science International ended in 1979.
Science Gossip ended in 1893.