Complex sentence: At the height of its popularity, "Calvin and Hobbes" was featured in over 2,400 newspapers worldwide; as of January 2010, reruns of the strip still appear in more than 50 countries.
Split into simpler sentences: At the height of its popularity, "Calvin and Hobbes" was featured in over 2,400 newspapers worldwide. As of January 2010, reruns of the strip still appear in more than 50 countries.