"It's like one twin took every Chinese gene that my husband had, while the other took every Caucasian one I have," Katelyn ...

A study involving identical twins showed the astonishing differences after one had a lot more sun exposure over their ...

A pair of identical twins embarked on a 12-week experiment to conclude whether following different dietary advice had an ...

Social-emotional development in twins depends on the attachment they share with each other and their parents. Friendships ...

Several sets of identical twins went on a meat vs vegan diet to test the results, and there's plenty that happened afterwards ...

Astrology reveals how even twins, born minutes apart with nearly identical birth charts, can lead vastly different lives.