What influence does the variation in estrogen level have on the activation of the female brain? Using functional Magnetic Resonance Imaging, Jean-Claude Dreher, a researcher at the Cognitive Neuroscience Center (CNRS/Université Lyon 1), in collaboration with an American team from the National Institute of Mental Health (Bethesda, Maryland) directed by Karen Berman, has identified, for the first time, the neural networks involved in processing reward-related functions modulated by female gonadal steroid hormones.

Researchers at the University of Alberta, in Edmonton, Canada, have announced the completion of the first draft of the human metabolome, the chemical equivalent of the human genome.

The metabolome is the complete complement of all small molecule chemicals (metabolites) found in or produced by an organism. By analogy, if the genome represents the blueprint of life, the metabolome represents the ingredients of life.

The scientists have catalogued and characterized 2,500 metabolites, 1,200 drugs and 3,500 food components that can be found in the human body.

Every morning Dennis Colson, a surveyor at New York City's Department of Design and Construction, begins his work day by placing his hand on a scanner to log his time and attendance at the office.

The use of hand geometry and other biometric data, like facial and iris recognition, is not new -- the University of Georgia pioneered the use of hand geometry when it installed scanners in its student dining hall in 1974.

But the planned roll-out of hand geometry scanners in all New York City government agencies has sparked union cries of "geoslavery" and assertions that technology developed for security will be used to track, label and control workforces.

"It's frustrating, it's kind of an insult," Colson, 53, told Reuters.

Always thought women were the stronger sex? Okay, I admit it, me too.

But I am inclined to be a little skeptical when someone pimping their book cites ancillary evidence rather than studies so even if the logic is good I tend to maintain a healthy disbelief.

Ryuichi Kaneko and Dr. Kunio Kitamura, two of the co-authors of "Sex no Subete ga Wakaru Hon (Everything You Need to Know About Sex)" write in the Mainichi Daily News:

"Green" laundry detergents have taken the leading role in a new effort by retailers and industry to market mainstream, environmentally friendly consumer products, according to an article scheduled for the Jan. 29 issue of ACS' weekly newsmagazine, Chemical & Engineering News.

In the article, assistant managing editor Michael McCoy describes how the cleaning products industry has embraced sustainability, with a variety of innovations. One, for instance, is an energy-efficient laundry detergent that cleans without hot water. Others are laundry detergents that cause less water pollution after they go down the drain.

Wal-Mart Stores, Inc. has been a major catalyst in the green detergent revolution, the article states.

This year, millions of Americans made the resolution to lose weight. However, many will get frustrated and give up before their goals are reached. Contributing to this problem is the host of bad information regarding diet and exercise circulating through gyms, workplaces, and the Internet. Julie Bender, a dietitian with Baylor University Medical Center at Dallas, and Phil Tyne, director of the Baylor Tom Landry Health and Wellness Center "weigh in" on the most popular diet and exercise myths:

1. Crunches will get rid of your belly fat. False. "You can't pick and choose areas where you'd like to burn fat", says Tyne. "In order to burn fat, you should create a workout that includes both cardiovascular and strength training elements.

A team of archaeologists and Earthwatch volunteers led by Dr. Mary Glowacki and Louis Tesar uncovered an elite Wari cemetery at Cotocotuyoc this past summer in Peru's Huaro Valley, near Cuzco. Among their finds was a "trophy skull," which offers insight into warfare in the Wari Empire based here from 1,500 to 1,000 years ago.

Researchers at the National Institutes of Health have developed an experimental vaccine that could, theoretically, eliminate malaria from entire geographic regions, by eradicating the malaria parasite from an area's mosquitoes.

The vaccine, so far tested only in mice, would prompt the immune system of a person who receives it to eliminate the parasite from the digestive tract of a malaria-carrying mosquito, after the mosquito has fed upon the blood of the vaccinated individual. The vaccine would not prevent or limit malarial disease in the person who received it.

An article describing this work was published on the Web site of Proceedings of the National Academy of Sciences.

Scientists at Cardiff University (Wales, UK) have confirmed what thousands of people with arthritis have believed for years. Cod Liver Oil really is effective in treating joint pain and can slow, even reverse, the destruction of joint cartilage.

Cartilage is the ‘gristle’ that cushions bones and prevents them from grinding against each other. Loss of cartilage leads to osteoarthritis, the painful and disabling condition experienced by 1.5 million people in the UK and the major reason for joint replacement surgery.