Researchers have tested shift workers' reactions in a real car -- and the results are compelling.

There are many things to fear in Tanzania besides Ebola. These include malaria, typhoid fever, food poisoning and traffic accidents. In two of the largest cities in the country, driving--or walking--is very dangerous.

A recent report on the national news only confirmed what many of us have known: Driving has not just gotten worse; it's become extremely dangerous. Indeed, it's completely out of hand.