TEHRAN, Feb 27 -By measuring fecal remains and climate data among ancient lake cores from Illinois' Horseshoe Lake, researchers were able to link climate change to the decline of Cahokia, a pre-Columbian Native American city located across the Mississippi River from present-day St. Louis.
TEHRAN, Jan 14- To better understand how the earliest dogs hunted, scientists scanned and analyzed the skulls of lions, wolves and hyenas. The research showed the earliest known dog species, Hesperocyon gregarius, likely pounced on its prey, just like foxes and coyotes.
TEHRAN, October 16 - Archaeologists have uncovered prehistoric remains at the site of a large garrison which is being built to house British troops who are returning from Germany.