<human>: What's the difference between the northern and southern lights?
<bot>: The main difference is that the northern lights are caused by solar activity, while the southern lights are caused by cosmic rays. The northern lights are typically seen in high latitude regions, such as Scandinavia, Canada, Alaska, Greenland, and Iceland; whereas the southern lights are usually seen closer to the equator, including South America, Australia, New Zealand, Antarctica, and Africa.