The new co-host's duties began early when she welcomed ABC's cameras to her home
He will serve as senior meteorologist for ABC's "Weekend Good Morning America"
Roberts returns five months to the day after starting medical leave
Anchor went on medical leave for bone marrow transplant
If trend continues, ABC's "Good Morning America" will take its first sweeps-period victory in key news demo since 1994
Ann Romney, wife of presidential candidate Mitt Romney, will appear on "GMA" Oct. 10
"Good Morning America" visits anchor in hospital
"The Colbert Report" host and "Modern Family" cast will step in for an ailing Robin Roberts, who took medical leave in late August
"Good Morning America" delivers highest gains against "Today" in total viewers and key demo since 1994
Today will be last day
Roberts is preparing for bone marrow transplant
Once the perpetual runner-up, "Good Morning America" continues to increase its total viewership lead and narrow gap in key demo
"Today" continues to beat "Good Morning America" in key demo
ABC's breakfast broadcast scored the top spot for the second time in three weeks, once again...
"Good Morning America" beats "Today" by an average of just 31,000 viewers
ABC barely edges out NBC show a week after Katie Couric's "GMA" gig
Afternoon "GMA" will bridge gap between "Revolution" and Katie Couric's new talk show for nine weeks this summer
'GMA' narrows gap with 'Today' Thursday in key demo
"GMA" also up; narrows ratings gap with top-rated "Today"
Would-be Republican candidate gets testy in "Good Morning America" interview
ESPN personality will join George Stephanopoulos and Robin Roberts soon
"Good Morning America" takes forgiving tone during segment on his backstage eruption
YouTube "Friday" sensation/Internet punching bag displays her indomitable spirit on national TV.
"Born This Way" singer wears latex outfit to promote safe sex
"Good Morning America's" Robin Roberts will interview him tonight after his ESPN special, but the interview will be taped to air Friday orning
Too hot for Disney? Backlash over singer's American Music Awards performance enters second day.