When you’ve just had identical twins, it’s normal to spend a lot of time looking down at their squishy little bodies and analyzing every subtle way they differ from one another. Unlike fraternal twins ...

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 ...

Are we destined to be smart? Twin studies reveal strong genetic roots for IQ, yet up to a third of intelligence is shaped by environment, context, and choice.

"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, ...

Ashley Ness' babies entered the world as quadruplets, but one of her babies never made it home from the hospital. Three years ...

Identical, or monozygotic, twins develop from the same fertilized egg that splits into two. These twins are the same sex and share the same genes. Sometimes called paternal twins, identical twins ...

For the best experience, please enable JavaScript in your browser settings. Following the Kakamega twin puzzle that has drawn the attention of the entire country, we ...