As her twin grandsons set out to serve a two-year mission for the Mormon church in Ecuador, Ahwatukee Foothills resident Mary Katzenbach decided to start her own project and document their experiences in a book.

It is possible that the Two Sisters, One Heart Memorial Run in honor of conjoined twins Emma and Taylor Bailey could have evolved into a successful annual event in San Tan Valley.

John E. Gillis and John M. Gillis came into this world with their father's name. Now all grown up, they're following in his footsteps as dentists in Arizona.

John E. Gillis and John M. Gillis came into this world with their father's name. Now all grown up, they're following in his footsteps as dentists in Arizona.

John E. Gillis and John M. Gillis came into this world with their father's name. Now all grown up, they're following in his footsteps as dentists in Arizona.

They look alike and they think alike.

Mountain Pointe twins, Scott and Sam Kingery are old hands at turning the double play.

Their father was a travelin’ man who made stops all over the world, and now twin brothers Matthew and Gunnar Nelson are following in his footsteps.

It's been awhile since the Suns have made a twin killing.

When Ahwatukee Foothills residents Dave and Kelly Damron went to the hospital for their 24-week ultrasound the last thing they wanted to hear from the technician was, "I need to go get the doctor."

When Ahwatukee Foothills residents Dave and Kelly Damron went to the hospital for their 24-week ultrasound the last thing they wanted to hear from the technician was, "I need to go get the doctor."

The Morris twins have been split up, but Markieff is excited about a new teammate: Steve Nash.

Multiple births, when a woman is carrying twins or more in a single pregnancy, have risen significantly in the last 30 years. While the average woman has just a 3 percent chance of giving birth to twins, there has been a 60 percent increase in twins since 1980, according to the National Center for Health Statistics.