If the same driver has two passengers in the car, that risk is 86 percent higher than if there were no passengers. And the risk climbs higher if there are three or more passengers. Conclusions were true for both male and female drivers and generally were the same regardless of the time of day, although statistics for male drivers late at night were higher. The researchers speculate that peer pressure is one link to the higher risk. The study did not address what role alcohol consumption might have played in the collisions.
Car crashes are the leading cause of death among American teenagers.
The National Institute for Occupational Safety and Health warns that workers whose jobs involve tuck-pointing are at risk for silicosis, a deadly lung disease, if they don't take safety precautions while they work. In the first step of tuck-pointing, a worker grinds the mortar out from between the bricks. The dust created by the grinding contains crystalline silica. Silicosis develops when a person breathes in too much respirable crystalline silica. Although the disease may take 10 or more years to appear, workers who are exposed to very high levels may experience symptoms after only a few weeks to four or five years.