The Arab Muslim victory at the Battle of al-Qadisiyyah paved the way for the Islamic conquest of Mesopotamia and Persia.

At the tops of many mountains and along numerous roads are small brass disks called benchmarks. These survey points map the ...

Historical texts that mentioned details about the battle site helped researchers match the images to the lost town of al-Qadisiyyah.

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