Easter weekend will be extra special for a North Texas teacher and her husband. The couple received an unexpected extra ...

For a group that makes up just 0.4 percent of the world’s population, identical twins have enthralled moviegoers.

The trans-Neptunian object Altjira, 44 times farther from the Sun than Earth is, could be the second known trinary, ...

Parents, you can do only so much. In "The Family Dynamic," author Susan Dominus explains how sibling relationships shape future trajectories.