Explore the universe with news on fascinating discoveries, scientific advancements and more. Ancient rock engravings in what’s now South America — believed to be among the largest in the world ...

The Arizona border, with an ancient tribe and one of the world's most unforgiving deserts, is steeped in tradition and stories of pain from colonization and migrants seeking a more dignified life.

He excavated ancient sites in Mexico ... who told him harrowing tales of crossing the border into the United States, only to be deported. Although he grew up near the border in Texas and ...