Despite all the movies, mythology, books, and TV shows about twins, in reality twins are quite rare! In the United States, the chance of having twins is just 3% for women overall. Fraternal twins are ...

A recent study reveals that identical twins are not entirely the same genetically. Originating from a single fertilized egg ...

Some couples are opting to reduce multiple births down to one infant. Aug. 15, 2011 — -- After years of trying to conceive, Dr. Kelly Ross was stunned to discover that she was pregnant with not ...