A painting of a white city, clustered around pearly towers and skirted by leagues of brilliant solar panels, wraps the front ...

A foot fossil found in Ethiopia belonged to an ancient human. The finding could knock one of the most famous names in human evolution from her spot on the family tree.

With the help of newly identified bones, an enigmatic 3.4-million-year-old hominin foot found in 2009, is assigned to a species different from that of the famous fossil Lucy providing further proof ...

Scientists from Arizona State University and other institutions finally assigned a species name to a fossil known as the ...

Tryptophan, the essential amino acid behind the Thanksgiving myth that eating turkey can make you sleepy, has been found to exist on Bennu, a small asteroid that swings by our planet about every six ...

While they suspected the foot belonged to an ancient human that likely lived alongside the species we know as “Lucy,” ...

When scientists sifted through dust from asteroid Bennu and spotted tryptophan, the same amino acid often blamed for ...

A 3.4-million-year-old fossil foot reveals that two early hominin species lived together - A. deyiremeda and A. afarensis.

Will people continue to hike and bike the Arizona Trail? Extreme weather and land use challenges may test the limits.

The federal government is providing water to some large agricultural districts for free. In a new study, researchers urge the Trump administration to start charging more for water.

Wild West boomtowns that turned into hollow relics hold a macabre grip on travelers' imaginations, and Utah's abandoned sites ...