A woman had sex with two identical twin brothers within the same four-day window. Nine months later, a child, known only as ...

Two British explorers have put George Mallory's 1920s Everest kit to the ultimate test by wearing it up a Himalayan mountain. Identical twins Hugo and Ross Turner, 37, summited Nepal's 21,250–feet ...

Add Yahoo as a preferred source to see more of our stories on Google. A century’s worth of twin data reveals that when schooling differs, identical twins’ IQs can diverge as much as unrelated people’s ...

Mystery surrounds paternity of child whose mother had sex with identical twins - It is ‘not possible’ to say who the biological father is due to the limits of DNA testing ...

A woman who had sex with identical twins separately "within four days of each other" has been told it is not possible to identify which one is the father of her baby.

For more than a century, scientists have debated whether intelligence is mostly a product of nature or nurture. Identical twins—those born with the same genetic blueprint—have long been the perfect ...