SIOUX CITY (KTIV) - Gather your supplies! In this episode we will use everyday materials to create a model of the rock cycle and explore the three different categories of rock. Sedimentary rocks are ...

Rocks and minerals hold precious clues about how Earth formed and evolved over billions of years — but what is the difference between the two? In essence, rocks are aggregates of two or more minerals.

A remote outcrop in Canada harbors rocks that are at least 4.16 billion years old, researchers report June 26 in Science. If true, these rocks would be the oldest known on Earth and the first to date ...

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