"The Katzenjammer Kids" was the first comic strip to use panels and speech balloons like modern strips do.
Today, comics continue to appear in newspapers all over the world; in the United States on Sundays alone, an estimated 113 million people read the comics, according to King Features Syndicate.
This website gives a brief overview of how yellow journalism evolved and describes the battle between Joseph Pulitzer and William Randolph Hears. It also explains what yellow journalism is in more detail.