Moreover, women are often more persistent when negotiating with men, and their efforts tend to produce better outcomes for all parties.

FORBES: What If Women Were in Charge of the Debt Talks?

Managing these risks often comes down to persistent attention to detail--by caregivers, patients and their advocates.

FORBES: Magazine Article

She writes, often quite movingly, of the persistent ambivalence of her feelings about her natal faith, but any strayed member of a tight community of believers feels this way about it.

NEWYORKER: I, Nephi

Sangomas believe that a persistent physical ailment is often a manifestation of a spiritual upset and they first need to address that, then they are guided by the ancestors on what the physical sickness is and how best to treat it, using traditional medicine.

BBC: Witnessing a South African healer at work

Older children and adults who have whooping cough often appear to have a bad cold or persistent cough that can be so severe that it causes vomiting.

CNN: Can breast-feeding prevent whooping cough?

"We looked at those people who were the most persistent, most hard-working, most involved, and achieved the most success, and often that was the most stress - those were the people who stayed healthier and lived the longest, " he explains.

BBC: The science of a long life