Watching these smart kids teaching time travel is like having a light turned on. Everything can be explained simply, and these kids prove it in an ad for Ignition Tutoring.

Stephen Hawking's time travel theories are explained by a group of kids in this ad for Ignition Tutoring. This tutoring program pairs up kids via the Internet--and Skype in this example--so they can tutor each other and offer assistance. This genius marketing scheme with smart kids teaching time travel is simple and effective.