Two teenagers are using Wikipedia to help other New Yorkers navigate the city. 

Ryan Ng and Shaul Picker contribute to the free online encyclopedia by editing and adding content to its articles. 

Their expertise: The New York City Transit System. 

The two Queens natives have worked on hundreds of Wikipedia pages related to New York City's subways, buses and railways. 

While they've worked together virtually, Ng and Picker have never actually met each other so we decided to invite them on the show.