Complex sentence: He is editorial director of "First News", a national newspaper for children published in the UK and host of "Piers Morgan Live" on CNN, which he began hosting on 17 January 2011.
Split into simpler sentences: He is editorial director of "First News", a national newspaper for children published in the UK. He began hosting "Piers Morgan Live" on CNN, which he began hosting on 17 January 2011.