Originally Posted by fietsbob

The goals of commercial radio changed as their target market for their advertisers changed ..

One thing the Web and Ipod changed was your radio signal no longer had to come either
line of sight from the transmitter .. (fm) or bouncing off the upper atmosphere (am)

so you can collect stuff you find world wide

[ found a :45', BBC interview
with the author, a historian on the Philosopher-mathematician Pascal,
and astronomers about the discovery of exoplanets around other stars, etc. ]