The Acasta Gneiss is known as one of the oldest rocks on the Earth, estimated to be about 4 billion years old, located in the ...

The people at the Smithsonian Institution National Museum of Natural History were nice enough to give a couple members of the Chemistry in Pictures team a behind-the-scenes look at their mineral ...

Smithsonian researcher Wriju Chowdhury is part of an expedition searching for 4-billion-year-old crystals that could uncover the secrets behind Earth’s early history Emma Saaty A remote geologic ...

Scientists recently unveiled the nation's newest "oldest known" rock — discovered in Michigan's Upper Peninsula. Michigan, Minnesota and Wisconsin all feature ancient rocks known as gneisses — ...

What we know today as Sabino Canyon was the site of a whole lot of scrunching 25 million years ago. In a geologic nutshell: Two ancient types of rock - 1.4-billion-year-old Oracle granite and ...

We know Earth is old. Scientists estimate that our planet formed around 4.5 billion years ago. But how old is it exactly? And what was it like when our planet was still forming? These questions have ...

High in the Canadian wilderness, Smithsonian scientists search for ancient minerals that could explain the origins of the continents, oceans and life on Earth Emma Saaty NMNH research geologist ...