A patient in Arizona has died from pneumonic plague, raising fears of the medieval 'Black Death' returning to the US.

Amid a prairie dog die-off near Flagstaff, one person in Northern Arizona has died from the plague after being hospitalized ...

A Smithsonian-led research team has discovered the oldest known pterosaur in North America, a sea gull-sized winged reptile ...

Researchers were able to date the fossil of the flying reptile, a close cousin of dinosaurs, back to more than 209 million ...

A rare Triassic fossil site reveals North America's oldest known pterosaur, Eotephradactylus mcintireae, in what was once a ...

In the remote reaches of Arizona s Petrified Forest National Park, scientists have unearthed North America's oldest known pterosaur a small, gull-sized flier that once soared above Triassic ecosystems ...

Paleontologists have uncovered in Arizona a Triassic treasure trove of fossils dating back 209 million years ago.

At a remote bone bed in Arizona, dense with fossils dating back around 209 million years, a Smithsonian-led team of ...

Florida ranked as the most dangerous state for cyclists, with 8.44 fatal accidents per one million residents each year.

EA Sports College Football 26 rankings of the top 25 toughest places to play does not include Arizona State's Mountain ...

From slashed taxes and Medicaid cuts to new fees for foreign visitors to the Grand Canyon, here's how President Donald Trump ...