Parental involvement (PI) laws require that physicians notify or obtain consent from a parent(s) of a minor seeking an abortion before performing the procedure. Several studies suggest that PI laws curb risky sexual behavior because teens realize that they would be compelled to discuss a...

Between 1997 and 2005, the number of annual motorcyclist fatalities doubled. Motorcyclist fatalities now account for over 10 percent of all traffic-related fatalities. However, over the last three decades, states have generally been eliminating laws that require helmet use among all...