Hoda Kotb began her journalism career at NBC in 1998, when she was hired as a Dateline correspondent and reporter. The TV broadcaster pivoted away from covering major world events in September 2007 when she joined Today as host of the show's fourth-hour slot at 10 a.m.

Black Widow star Scarlett Johansson will guest host the fourth hour of NBC’s flagship morning show Today beginning Tuesday, Jan. 21. That will come little more than a week after longtime co-host Hoda Kotb leaves on Jan.

After Kotb departs her longtime role as co-host of 'Today' this week, Bush Hager will be joined by various celebrities.