— Articles —
The Great Bend of the Niger River: two separate rivers in the past.
The origin of oxygen: When did we start breathing?
What does a geologist do and why does it matter?
What are rocks made of?
The origin of the Moon: A Tale of Two Planets
Crystal clear: Can you see the inside of a crystal?
What is Geological Time?
Earthquake in Pozzuoli: an inflating volcano?
Lapis lazuli: via the Silk Road to Tutankhamun.
Campi Flegrei volcano: Europe's Yellowstone?
The colours of time: Villages north of Madrid.
Valley of the Jerte River: Spanish cherries and the Jurassic Period.
Diamonds: messengers of deep Earth.
A pale black dot: Mercury transit.
— Featured article: Lapis lazuli: Following the trace of a blue gemstone —
Article by Kathelijne Bonne
From high mountain peaks to the pharaohs.
Read how precious stone lapis lazuli found its way from the world's most ancient mines to Mesopotamia, Egypt, and Greece, and finally to the canvases of the great painters. Find out how lapis lazuli formed in the first place, as it crystallized in seams of precious rocks in the midst of plate tectonic turmoil.