From tool-using chimpanzees to puzzle-solving capuchins, the primate world is packed with surprising brainpower. But how do the planet’s cleverest monkeys and apes really compare with human intelligen ...

Deondre Smith Jr., 9, and his brother Devonne, 7, searched for their favorite rock Friday among thousands for sale at the opening day of the Roxy Ann Gem & Mineral Show in southern Oregon’s Central ...