Green Matters on MSN

Experts Say This Famous Gravity-Defying Rock in Arches National Park Will Fall Soon

The massive gravity-defying boulder is Entrada Sandstone, and the throne it sits on is the Dewey Bridge Mudstone. According ...
Yahoo

Earth’s oldest rocks date back 4.16 billion years

The site of the oldest rocks on Earth, about 18 miles from Inukjuak, in Nunavik, Canada. Gray rocks uncovered in northern Nunavik, Quebec, Canada may be the ultimate primordial find. The stones date ...