Birds do it, bees do it, even fishes in the seas do it. So why do we have such a hard time when people migrate from one place to another? Science writer Sonia Shah presents the evidence that migration is central to the human story -- and it just might save us from what’s coming next.

Businesses want people to buy their products. Parents want their kids to eat their vegetables. We all want to convince someone to do something. So we push and we prod – but often to no avail. Wharton marketing professor Jonah Berger says there’s a better way. In this high-speed conversation with Rufus, he lays out his formula for removing barriers to change.