In 1936, Emma and Max Hahn stumbled upon a strange stone nodule along a creek in London, Texas. Embedded in it was a wooden handle — unusual enough that they took it home as a curiosity. It wasn’t ...

Geology is broadly the study of the Earth and other planets, moons, and smaller planetary bodies. Fields of geology range from the initial formation and differentiation of the Earth to modern surface ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Eric's career includes extensive work in both public and corporate accounting with ...

Subduction of sediment, derived from weathered continental crust, can enrich the mantle in critical metals and volatiles. Melting of such enriched mantle produces alkaline magmas that may form major ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The biggest event of the year was Ozzy and Sabbath’s farewell show, Back To The Beginning. Sadly, ...