Greenland

The Earth’s magnetic field is at least 3.7 billion years old.

In southwest Greenland, amid vast expanses of ancient ice, lies the famous Isua Belt of Green Cliffs, the oldest and…

3 weeks ago

Earth’s protective sky is at least 3.7 billion years old | The science

In the southwest of Greenland, surrounded by ancient ice, lies the belt of green cliffs of Isua. It is the…

3 weeks ago