Mexican archaeologists have found two 1,300-year-old limestone sculptures of captured Mayan warriors that they say could shed light on the alliances and wars among Mayan cities during the civilization's twilight. (Scroll down for photos) The life-size, elaborate sculptures of two warriors sitting cross-legged with hands tied behind their backs were found in May in the archaeological site of Tonina in southern Chiapas state along with two stone ballgame scoreboards. The 5-foot (1.5-meter)...