Help keep Salon independent

Topic: Earth Science

Artist's impression of Earth ring system (Oliver Hull)

Earth may have once had ring like Saturn

Rae Hodge
Artwork of the so-called ring of fire. This is a region of tectonic plate boundaries around the Pacific Ocean, where earthquakes and volcanoes are common. (Getty Images/MARK GARLICK/SCIENCE PHOTO LIBRARY)

The case of the missing tectonic plate

Rae Hodge
Earth cross section in space view (Getty Images)

Earth gets a new layer

Matthew Rozsa
Globe Spinning (Getty Images)

Why Earth is spinning faster than before

Matthew Rozsa
Advertisement: