The Richat Structure (The Eye of the Sahara) is an eroded geologic dome in Mauritania, Africa. Its birth started over 100 million years ago.

Fancy colored diamonds get their color from three main causes: impurities in the diamond crystal structure, lattice defects, and radiation.

Diamonds are minerals composed of carbon that come from deep volcanic eruptions in the Earth's mantle and were formed billions of years ago.

From white sand beaches to black sand beaches, and even multicolored sand beaches - Earth has it all! Where does the sand color come from?

The Naica Cave of Crystals, home to giant selenite crystals, is one of the most fascinating, yet potentially deadly, places on Earth.

Learn about a scientist's path from a science career in academia to creative writing and the lessons learned along the way.