The news programs that Americans watch on national cable channels and their local television stations have changed significantly in recent years while the network evening newscasts have remained remarkably stable, according to a new study from the Pew Research Center.

While print newspapers everywhere face difficult challenges in the future, newspapers in the United States today are suffering more acutely than those virtually anywhere else in the world. In sharp contrast with the U.S. situation, overall print newspaper circulation worldwide has dipped only slightly so far in 2010. Revenues are expected to rise, according to a new report from the Pew Research Center’s Project for Excellence in Journalism.