Recent footage from the International Space Station (ISS) has revealed what the aurora borealis looks like from space.

Blue rings found in the stems of trees and bushes in Norway point to a historic cold period in the late 1800s, but the exact cause of this climatic event remains unclear, scientists say.

The aurora borealis (also known as the northern lights) is a mesmerizing natural phenomenon that occurs in the northernmost destinations in the world, such as Alaska, Norway, Iceland, Finland ...