Moments in human history are etched into the Earth. Now researchers are piecing together evidence of our impact on the planet ...

A stunning composite image, made up of three years' worth of satellite photos, shows the ancient lava of Libya's Haruj volcanic field interspersed with patches of golden sand.

Related: See all the best images of Earth from space A group of five barchan, or "horned," sand dunes can be seen in a zoomed-in version of the 2013 photo (see below). Over time, these arrowhead ...

Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds.

Sand and dust storms are an essential element of the Earth’s natural bio-chemical cycles, but are also caused in part by human-induced drivers, including climate change, and unsustainable land ...

With the proper know-how, readily available earth, sand, chalk, lime, or gravel can yield a versatile, strong, and durable construction material. Its colorful results vary from region to region ...