Part 2: The Zygosity Test Results Arrive
Double InanityTwin studies are pretty much useless.
Rise of the TwinsA Slate special issue on the science, history and culture of multiple births.
A Brief History of the Double StrollerHow parents ferry their multiples, from the baby boom to today.
Are Twins Taking Over?Making sense of the dramatic rise in multiple births.
Dorothy Burlingham's TwinsThe study that explained why it's not so wonderful to have a look-alike.
Part 1: Russ Is My Identical Twin. At Least, That's What We've Always Said …
Dugon, Haus You Dinikin, Du-AhThe secrets of twin speak.
Confessions of a Twin ObsessiveBeing a singleton never seemed good enough.
Your Head on My ShoulderParasitic twins and other half-formed siblings.