After a finite number of divisions, cells simply give up. As each round of replication trims their telomeres—the protective ...

A DNA result shook his world, claiming his dad was not his father. What followed was a reminder that family is built through ...

We have long struggled to determine how the first living organisms on Earth came together. Now, surprising evidence hints that poorly understood prions may have been the vital missing ingredient ...

At 49, he realized something most men never confront: he has no children, and his bloodline ends with him. Society tells men ...