After creating the massive marble sculptures “Pas De Deux” and “The American Woman,” Francisco Sotomayor focuses today on obsidian, volcanic glass from Mexico. With “Eagle of the Sun,” created with ...

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Obsidian is fast, private, infinitely customizable, and surprisingly capable on Android. Here’s how I turned Obsidian into my ultimate Android productivity app.

A giant glass-like black object that was discovered by a local worker in Northeast China's Jilin Province has recently become an internet sensation because it is not some common glass object, but a ...

An obsidian blade found in Texas decades ago could shed new light on a Spanish expedition that set out in search of a fabled "city of gold" during the mid-16th century. The unassuming artifact, which ...