Millie Smith, 28, and Tom Smith, 31, from Manchester, were informed that their twins had twin-to-twin transfusion syndrome (TTTS) - a rare and life-threatening condition ...

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, ...