Stand in enough lines at the grocery store or ride in enough crowded buses, and you're bound to catch a whiff of breath that's strong enough to peel paint. And, if you're honest, you'd have to admit there have been times when your own breath has been less than rosy. Bad breath — also known as halitosis — isn't a trivial problem. Severe cases can strain relationships and sap confidence. Fortunately, even the most foul breath can be tamed. How much do you know about bad breath? Take this short quiz to find out.

Some like it salty; some like it sweet. As a nation, however, people in the United States have shown time and again a craving for sweets -- especially desserts and soft drinks that have been sweetened with extra sugar. It's this "added sugar" that's being blamed for making the nation fat. In fact, the average consumption of sugary food and beverages has risen nearly 39 percent since the 1950's, according to the U.S. Department of Agriculture. Today, the typical American's daily sugar load amounts to a whopping 32 teaspoons per day. If you're eating that much sugar, you're eating more than 115 pounds a year. About a third of this confectionary consumption comes from sugary soft drinks. Another 19 percent comes from other sweetened beverages, like fruit drinks and chocolate milk, while 16 percent comes from candies and sweets, and 13 percent comes from sweetened grains, like breakfast cereal and bread. So just how sweet is our sweet tooth? Take this short quiz to find out how much you know about sugar.