Popular Science EDITED NOT Mechanics is truly one of the great science and technology magazines out there. As a kid, I used to read these in our school library at lunch (Yes I was a geek). They have made available all of their old issues up until late 2009.
Check em out here, http://www.google.com/books/serial/CzwEAAAAMBAJ?rview=1
an each way bet?? Popular Science or Popular Mechanics?? Great Magazines, used to subscribe to both when was living in US. Nice find thanks