The eruption of Iceland's Eyjafjallajokull volcano on April 14, 2010 was massive, sending a plume of ash 30,000 feet into the air. The result had both local and international effects including massive flooding, evacuations, and a halt to air travel in Europe for days. This episode looks at the volcano's behavior in the days leading up to the event and the explosion itself. The question arises about what effect this eruption might have on nearby Katla volcano, which holds the potential for even more destruction.