YouTube videos are great. You can watch soldiers in Afghanistan rock out to Lady Gaga, witness a toddler discover the joys of lobsters, and see a cat play the piano. The only drawback? You're just watching—you don't get to be part of the action. Until now. YouTube has introduced an interactive radio that allows you to choose to listen to varied channels, ranging from "hip-hop" to "chill out." No longer a passive observer of other people's pleasure, you get to pick your own fun. Enjoy (our personal favorite is the cat station):
Age discrimination affects us all. Who cares about youth? James Hamblin turns to his colleague Jeffrey Goldberg for advice.