[6] She then graduated magna cum laude and Phi Beta Kappa from Columbia University with a bachelor's degree in Political Science[6] and Middle Eastern studies.

In September 2007, Harlow was hired by Forbes.com Video Network, where her area of coverage expanded to fashion, entertainment and business topics.

[8] In 2013, while reporting on the conviction of two Steubenville, Ohio, high school football players for the rape of a 16-year-old, Harlow stated that it was "incredibly difficult, even for an outsider like me, to watch what happened as these two young men that had such promising futures, star football players, very good students, literally watched as they believed their lives fell apart ... [Ma'lik Richmond] collapsed [and told his attorney,] 'My life is over.

'"[9][10] This apparent expression of sympathy for the rapists provoked widespread criticism.

[citation needed] On December 28, 2015, Harlow passed out briefly while live on the air from the anchor desk.

[13] Beginning on February 6, 2017, Harlow and Jim Sciutto took over as the new co-anchors of CNN Newsroom from 9 A.M. to 11 A.M. every morning due to Carol Costello's move to HLN.

On September 15, 2022, it was announced that Harlow would co-anchor the new CNN revamped morning show with Don Lemon and Kaitlan Collins later in the year.

[22] On May 14, 2024 Harlow delivered the keynote speech for Columbia College’s Class Day.