For more than a century, scientists have debated whether intelligence is mostly a product of nature or nurture. Identical ...

The origins of Rome have been debated for centuries but one tale has prevailed over the rest: twin brothers Romulus and Remus ...

There’s both fact and fiction to the rumors that twins run in families and tend to skip a generation. Here’s how heredity impacts your odds of conceiving twins.

Alexandra Hildebrandt, a 66-year-old woman from Germany, gave birth to her 10th child earlier this year and says she’s ...