Complex sentence: The television, radio and newspapers were the world's mediums for accessing news and entertainment; now, all three mediums have converged into one, and people all over the world can read and hear news and other information on the Internet.
Split into simpler sentences: The television, radio and newspapers are the world's main mediums for accessing news and entertainment. Now, all three mediums have converged into one, and people all over the world now can read news on the Internet.