Iran and the United States held in-depth negotiations in Oman over Tehran's rapidly advancing nuclear program on Saturday, talks that likely will hinge on the Islamic Republic's enrichment of uranium.

World leaders and rank-and-file Catholic faithful bade farewell to Pope Francis in a funeral Saturday that highlighted his concern for people on the peripheries and reflected his wish to be remembered ...

Plants that experience drought stress exhibit visible and invisible changes designed to conserve water and reduce harm. Plants may shed leaves to minimize water loss through transpiration, or close ...

Celtic tied fierce Glasgow rival Rangers on a record 55 Scottish top-flight titles by clinching the trophy on Saturday with four games to spare.