For 47 years, Heather Lally never knew her dad. Then a DNA test connected her to the birth father she didn't know she had, a Vietnam veteran from Kentucky.

Experts caution those using these services to be careful, as you may not always get what you want from biological relatives.

New breakthroughs in microbial analysis could enhance disease prediction, environmental protection and our understanding of the planet’s smallest life forms.

After Hunter Biden initially denying he had another daughter, here's how his relationship stands with his daughter, Navy, and her mother, Lunden Roberts.

A large fossil study shows young shark and ray species vanish faster, while older species stay stable over time.