Some officials overseeing local water systems have tried to go above and beyond what is legally required. But they have encountered resistance, sometimes from the very residents they are trying to protect, who say that if their water is legal, it must be safe.

Prosecutors say it would be next to impossible to get one teen to testify in court that another had slipped him or her a copied disc at lunchtime. And besides, isn't sharing music a time-honored part of teen friendship?

Economists at the National Bureau of Economic Research and University of Chicago persuasively argue that one of the biggest reasons for the nation's current obesity epidemic is that food is now so much cheaper and easier to prepare.

If you look hard enough, you'll find that many of the products we use every day - chewing gums, skin moisturizers, disinfecting wipes, air fresheners, water purifiers, health snacks, antiperspirants, colognes, teeth whiteners, fabric softeners, vitamins - are results of manufactured habits.

You're much better off creating positive rewards, complimenting people for acting correctly, rather than punishing them when they act incorrectly.

In the 1970s, New York City defaulted on its debt, and yes, the consequences were painful. Enrollment plummeted at City University campuses, which until then had offered free education. Seven thousand police officers were laid off. Crime skyrocketed. Services for the poor disappeared.

Around New York City, samples collected at dozens of beaches or piers have detected the types of bacteria and other pollutants tied to sewage overflows. Though the city's drinking water comes from upstate reservoirs, environmentalists say untreated excrement and other waste in the city's waterways pose serious health risks.

Prosecutors say it would be next to impossible to get one teen to testify in court that another had slipped him or her a copied disc at lunchtime. And besides, isn't sharing music a time-honored part of teen friendship?

For years, many public health campaigns that aimed at changing habits have been failures.

When people have a willpower failure, it's because they haven't anticipated a situation that's going to come along.

Many environmental advocates argue that agricultural pollution will be reduced only through stronger federal laws.

Stock exchanges say that more than half of all trades are now executed by just a handful of high-frequency traders, who use rapid-fire computers to essentially force slower investors to give up profits, then disappear before anyone knows what happened.

Back when Detroit was the head of auto manufacturing, it was clear where profits were created. Right? A car was made in Detroit. There was little argument that you could make that some of the money from that should be sent overseas to Ireland.

Technology giants have taken advantage of tax codes written for an industrial age.

Even though it's hard to learn how to back your car out the driveway at first, once it becomes a habit, you can do it almost automatically and think about something else, like the meeting that you need to go to today or what's on the radio.

Patents are being used to wage war in the digital world, and as a result, patents have become a toll gate on the road of innovation.

Many cows are fed a high-protein diet, which creates a more liquid manure that is easier to spray on fields.