Nostalgic for Sk8er Boi? You are not alone

The sounds of summer in the city: Avril Lavigne, Janet Jackson and Billy Idol? The big artists of the 90s and 2000s are selling out venues, and we ask Elamin Abdelmahmoud what's up with the nostalgia acts. And from the past to the future, we talk to a professor about the gamification of learning and if gamers are going to win this thing called life. And we check in with the affordable housing project being built in a Kensington Market parking lot.