The Threat of a Global Debt Crisis

One in five people worldwide live in a country that has a high risk of default. Scientists aren't sure exactly what's going on inside these orcas' heads, but there's little evidence that revenge or anger is the motive. The director of the Orca Behavior Institute tells NBC, bumping boats might be a fad. And much like teens, they have a lot of emotions and are often misunderstood.