A New York woman made a life-changing discovery when she found out that her favorite college professor is actually, in fact, also her biological sister. Diane DiProspero Cook and Karen Cometa-Zempel met at Bryant and Stratton College, according to UPI, in 1985. They discovered their biological ties 31 years later.
Apparently the two lived "parallel lives" even before discovering each other, as they were both adopted by Italian American families, grew up 20 miles apart in upstate New York, and share many of the same traits and mannerisms. They even ran into each other at Niagara Falls after postponing plans to meet up formally. Cook and Cometa-Zempel are spending as much time as possible together now to make up for the lost years.