Twins have been rare in human history and for that reason can seem special. Many cultures associate twins with health and ...

On TLC's "Extreme Sisters," twins Brittany and Briana show what it's like to live with their husbands and raise their children under one roof.

After years of answering question after question about being a twin, I can speak for the masses when I say that twins are a fascinating phenomenon. It's estimated that only 3% of the population is a ...

Seeing double may often be a sign of a larger health issue, but, in this case, it could be the key to reversing chronic diseases like diabetes. Mountain View, California-based startup Twin Health has ...

"I do believe that twins in that situation have a sort of ‘extra sense’ about what is happening with their twin," one expert tells TODAY.com. A video of twin girls selecting the same colored blocks ...

“It’s vanished,” the sonographer said. He had checked the ultrasound several times and was certain of his assessment. My husband and I craned forward to examine the ghostly shadows on the screen, the ...

A parasitic twin is an identical twin that has stopped developing during gestation, but is physically attached to the fully developing twin. The fully developed twin is also known as the dominant or ...

Good quality sleep is vital to your health, both physical and mental. And when it comes to choosing a mattress, size can play a huge role in how comfortable you are. If you're looking for slimmer ...

How far would you go to find your "twin flame?" Individuals may embark on an exhaustive journey in the quest for a twin flame, or a profound romantic connection. Two documentaries, “Escaping Twin ...

Gilmore Girls could have looked very different if someone else other than Lauren Graham portrayed Lorelai. In fact, a Twin Peaks star almost got the part.

Some mattress sizes are easy to differentiate, like a full versus a queen, but others are downright confusing. For example, what's the difference between a single and a twin mattress? Technically, ...