As the sun dipped low to the southwest of the Grand Canyon, tourists flocked to the rim. They lined up to catch the shuttle ...

"The Grand Canyon is an epic Rosetta Stone for geology," Denver Museum of Nature and Science geologist James Hagadorn said.

Some time ago, friends and I were hiking on the eastern part of the 45-mile Thunder Swamp Trail in Pike and Monroe counties, Pennsylvania. To give you an idea of ...

Since soon after our planet formed, Earth's 4.6 billion-year-long history was dominated by single-celled life. Something ...

Supai started life in a pack of wild dogs on the Havasupai Indian Reservation. Here's how she was named the "happiest pet on ...

With just two days until the presidential election, fresh polling is pegging six of the seven battleground states within the ...

Local rivals Arizona State and Grand Canyon meet Thursday night in Phoenix with reigning WAC Player of the Year Tyon ...

Under the system, each state is allocated a number of electoral votes determined by the size of its congressional delegation.

Four years after Donald Trump became the first Republican presidential candidate since 1996 to lose Arizona, he reclaimed the ...

Geoscientists employed current-day stratigraphic, depositional and paleontological models, along with modern technological muscle to provide updated insights of the Cambrian period of the Grand Canyon ...