Seeing not one but two embryos on your first ultrasound can bring up a lot of feelings: "This was very unexpected, and I’ll admit I am scared," says one BabyCenter mom with twins on the way. "I'm 4'10 ...

Twin babies are doubly adorable, of course, and they also generate lots of curiosity: How do you tell them apart? Do they act ...

Around 1 in 250 pregnancies result in identical or “monozygotic” twins, but the mechanism behind monozygotic twinning has remained elusive, partly because the phenomenon is so rare and partly due to ...

Laura Watson was asked if she wanted an abortion because her twins “were effectively killing each other in the womb.” “Nothing can prepare you to hear doctors give terminating your pregnancy as a ...

Cinematic-MRI shows twins vying for legroom in utero. Dec. 3, 2012— -- Sibling rivalry can apparently begin even before birth and researchers in London have remarkable footage of twins fighting ...

FOR 30 years, conjoined twins Abby and Brittany Hensel shared a bond unlike any other, living life literally side by side.  That closeness took a new form four years ago when Abby married US ...

There are a couple of standard questions sonographers expect from parents at their first ultrasound: can you see a heartbeat and how many are there? Although having twins might be considered rare, ...