AP - Apparently the bad boy doesn't always get the girl. At least in a South American tribe with the highest known murder rate, it turns out that the most aggressive guys end up with fewer wives and children than milder men, according to a report in Tuesday's edition of Proceedings of the National Academy of Sciences.

Scientists are proceeding methodically and cautiously with the Mars rover.

Think kids dislike science? Forensics proves otherwise.

Acupuncture can help people with chronic low back pain feel less bothered by their symptoms and function better in their daily activities, according to the largest randomized trial of its kind, published in the May 11, 2009 Archives of Internal Medicine. But the SPINE (Stimulating Points to Investigate Needling Efficacy) trial raises questions about how the ancient practice actually works.

A new University of British Columbia study finds that our brains are much more active when we daydream than previously thought.

An ambitious effort in avian conservation is underway this spring throughout the New York portion of the Lake Ontario watershed.

A popular view among evolutionary biologists that fundamental genes do not acquire new functions was challenged this week by a new study in the Proceedings of the National Academy of Sciences.

Rare and unique ecological communities will be lost if oceanic islands aren't adequately considered in a global conservation plan, a new study has found. Although islands tend to harbor fewer species than continental lands of similar size, plants and animals found on islands often live only there, making protection of their isolated habitats our sole chance to preserve them.

(AP) -- The detailed new look yet at the genetics of Mexicans is showing significant diversity, a finding that could help point the way to customized drugs and identification of people prone to certain diseases.

Microsoft launched its first bond issue on Monday, sparking rumors the US software giant was contemplating a takeover bid.

Photosynthesis is a remarkable biological process that supports life on earth. Plants and photosynthetic microbes do so by harvesting light to produce their food, and in the process, also provide vital oxygen for animals and people.

Sediments released by many of the world's largest river deltas to the global oceans have been changed drastically in the last 50 years, largely as a result of human activity, says a Texas A&M University researcher who emphasizes that the historical information that can be gathered from sediment cores collected in and around these large deltaic regions is critical for a better understanding of...

University of Florida researchers have learned more about how smallpox conducts its deadly business - discoveries that may reveal as much about the human immune system as they do about one of the world's most feared pathogens.

Aggressive, vengeful behavior of individuals in some South American groups has been considered the means for men to obtain more wives and more children, but an international team of anthropologists working in Ecuador among the Waorani show that sometimes the macho guy does not do better.

A diet designed to prevent and treat high blood pressure also may be associated with a lower risk of heart failure among women, according to a report in the May 11 issue of Archives of Internal Medicine.

(AP) -- Yahoo has won a legal battle over removing nude photos that an Oregon woman claimed her boyfriend posted on its Web site without her knowledge or permission.

Rest and hot tea — not antibiotics and work — may be the remedy for a quick recovery.

The alcohol institute estimates that 30 percent of people 18 and older drink at levels that raise their risk of alcoholism.

A medical specialty is created to help the young and defenseless.

A Carleton University graduate student is trying to launch a business based on a device that could make wind turbines quiet enough to install closer to people's homes and make loud, rattling helicopter rides a thing of the past.

AP - The detailed new look yet at the genetics of Mexicans is showing significant diversity, a finding that could help point the way to customized drugs and identification of people prone to certain diseases.

Aberdeen scientists say they have "solved the 50-year puzzle" of how and why limbs are targeted by thalidomide.