America is losing its dark sky. Artificial light at night is harming sea turtles and other animals and has been linked to health problems in humans. For this month's Environmental Outlook, fighting light pollution.
Researchers are trying to figure out if it really is possible to be addicted to food. A study of brain activity finds there's more going on in areas linked to reward and addiction after people drink a shake with lots of refined carbohydrates. But it's not clear how that factors into overeating.
Men with low-grade prostate cancer are choosing robotic surgery and other expensive treatments, even though they probably don't need treatment at all, a study says. Less testing and waiting before deciding to treat would reduce harmful side effects in many cases.
There have been nagging questions about whether nitrous oxide during surgery raises the risk of heart attacks and other problems. Now, there's some reassurance, though no definitive answer, from a study that looked at the widely used anesthetic.
States and the federal government have a big job to do when it comes to explaining to the uninsured how to buy health insurance under the Affordable Care Act. The success of the law will be judged in part by how many Latinos sign up.
Researchers were surprised to find that people with Type 2 diabetes who lost a lot of weight didn't lower their risk of heart attacks or strokes. They did have better control of their blood sugar and saw other health benefits.
If your meals depended largely on the success of your family farm, would it change the way you felt about new crop technologies? Uganda is debating whether to give its first genetically modified plant, a GM banana, to millions of families for free.
Paying doctors to prescribe particular drugs is illegal. But drugmakers pay some doctors to talk with their peers about prescription drugs. The speakers say they aren't influenced by the money they get for promoting the drugs. But data show many of them are top prescribers of the medicines.
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