Child car seats save lives, right? Maybe not, according to the authors of a new book, "SuperFreakonomics," who argue that seat belts work just as well as car seats on children more than 2 years old.
Car crashes are the leading cause of death for children between the ages of 3 and 6 years old, and 8 to 14, according to the National Highway Traffic Safety Administration .
The NHTSA says car seats reduce fatalities by 54 percent. But it draws the comparison with children sitting in cars...
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