When the tsunami hit South East Asia on Dec 26th, 2004, the headlines constantly talked about the impact of the earthquake and the tsunami on the earth’s surface. It was one of the four largest earthquakes that have been recorded in the past 100 years. Scientists at NASA calculated that this earthquake changed the shape of our planet, shifted the North Pole by a few centimeters, and also shaved off a few microseconds from each day. We asked a lot of questions and learned a lot in the process. For example, we learned about the mega-tsunamis and the great damage they can cause, particularly the Cumbre Vieja on La Palma.