"It's awesome and they are so [cute] together." — -- In a happy coincidence, a pair of identical twins have given birth just 20 hours apart in the same hospital. Becky Pistone and her sister, ...

“Introducing #DemKittens, the new adopted family members," she said. Mariah Carey’s family just got a little bigger. Over the weekend, the singer shared sweet photos of her and her twins, son Moroccan ...

From Romulus and Remus—the myth of the twin brothers who founded the city of Rome—to the synchronized speech of Australia's "Twinnies" Paula and Brigette Powers, identical siblings have long inspired ...

There’s a common assumption that intelligence is largely determined by genetics. After all, previously published studies ...