WATCH LIVE
Some students had a special role at the Pennsylvania Convention Center.
Students from Agora Cyber Charter were guides for guests attending a flower show sneak peek.
Inside the hall, work continued well into the night on the exhibits themselves.
Mistrial declared in 3rd federal trial of labor leader John Dougherty
AccuWeather: Frost Advisory and a Freeze Warning overnight
Fmr. bank worker accused of stealing $44K from victim killed in crash