Jonathan O'Neil / AP Ancient rocks could shed light on Earth's earliest days Earth formed about 4.5 billion years ago from a collapsing cloud of dust and gas soon after the solar system existed.

Two different testing methods found that rocks from an area called the Nuvvuagittuq Greenstone Belt in northern Quebec date to 4.16 billion years ago, a time known as the Hadean eon. The eon is ...

This deposit is a combination of rock and plastic polymers from human waste that have been compressed together. Plastic rocks have been found both on the coast and inland in 11 countries across 5 ...

Gray rocks uncovered in northern Nunavik, Quebec, Canada may be the ultimate primordial find. The stones date back 4.16 billion years to the Hadean era and are the oldest known rocks on the planet.

Studying rocks from Earth's earliest history could give a glimpse into how the planet may have looked—how its roiling magma oceans gave way to tectonic plates—and even how life got started ...

Earth formed around 4.57 billion years ago, but no surface rocks date back that far. That’s because too much has happened in the interim: During Earth’s first 600 million years, known as the ...