It is a well-known fact that given the availability of food, we eat far more than what would be healthy for our body. Obesity has become a plague in many countries, and the fact that it correlates very tightly with a decreased life expectancy is not a random chance but the demonstrated result of increased risk of life-threatening conditions connected with excess body fat.

Yet we eat, and drink, and eat. We look like self-pleasing monkeys trained to press a button to self-administer a drug. To make matters worse, many of the foods and drinks we consume contain substances purposely added to increase our addiction. So it takes a strong will to control our body weight.

A new paper delineating spiders’ roles within their colonies is intriguing because the spiders’ specialization (like caregiver or hunter-warrior) isn’t determined by size or physical structure, like with ants, but by personalities.

Aren't spiders loners? Most are, but a few species such as Anelosimus studiosus live in groups.

Colin Wright, a second-year PhD student in the University of Pittsburgh’s Department of Biological Sciences, along with Jonathan Pruitt, assistant professor of behavioral ecology at Pitt and Tate Holbrook of the College of Coastal Georgia, separated docile spiders from the aggressive by observing how much space they demanded from fellow colony members. Aggressive females demand more space than docile ones.

If you want to do something more practical with your phone than playing Angry Birds and reading email you won't reply to until you get to a computer, researchers at U.C. Davis have created Easy Leaf Area, which allow users to accurately measure leaf area from digital images in seconds. 

Leaf measurements are often critical in plant physiological and ecological studies, but traditional methods have been time consuming and sometimes destructive to plant samples.  

Bacteria's ability to destroy viruses has been a mystery but researchers say they now have a clear picture of the bacterial immune system and say its unique shape is likely why bacteria can so quickly recognize and destroy their assailants.

The researchers drew what they say is the first-ever picture of the molecular machinery, known as Cascade, which stands guard inside bacterial cells. To their surprise, they found it contains a two-strand, unencumbered structure that resembles a ladder, freeing it to do its work faster than a standard double-helix would allow.

Hydraulic fracturing is emerging as one of the primary methods of drilling for natural gas, yet is equally controversial in its potential to induce harm to humans and the environment.

The uncertainties of the health risks associated with horizontal drilling using fluid pressure to break down shale formations for natural gas extraction has pushed countries worldwide to proactively regulate the use of this technology, such as a temporary ban in Germany in 2012 and a ban in France in 2011.

A scientist has discovered a potentially new form of plant communication, one that allows them to share an extraordinary amount of genetic information with one another.

Professor Jim Westwood examined the relationship between a parasitic plant, dodder, and two host plants, Arabidopsis and tomatoes. In order to suck the moisture and nutrients out the host plants, dodder uses an appendage called a haustorium to penetrate the plant. Westwood previously broke new ground when he found that during this parasitic interaction, there is a transport of RNA between the two species. RNA translates information passed down from DNA, which is an organism’s blueprint.

A team of researchers has developed a technique to record the quantum mechanical behavior of an individual electron - contained within a nanoscale defect in diamond.

Their technique uses ultrafast pulses of laser light both to control the defect's entire quantum state and observe how that single electron state changes over time.   

This research contributes to the emerging science of quantum information processing, which demands that science leave behind the unambiguous universe of traditional binary logic—0 or 1—and embrace the counterintuitive quantum world, where behavior is radically different from what humans experience every day. While people are generally content being in one place at a time, electrons can be in many states at once.

Women with a vitamin D deficiency were nearly half as likely to conceive through in vitro fertilization (IVF) as women who had sufficient levels of the vitamin, according to a new study in the Journal of Clinical Endocrinology&Metabolism.

Long known for its role in bone health, vitamin D is a steroid hormone that is emerging as a factor in fertility. Animal studies have shown that the hormone, which is produced in the skin as a result of sun exposure as well as absorbed from some fortified foods, affects fertility in many mammals.

A picture is worth a thousand words, the saying goes, meaning that a picture can tell a big story quickly, but what if it could also represent a hundred thousand other images? 

New software seeks to tame the vast amount of visual data in the world by generating a single photo that can represent massive clusters of images. This tool can give users the photographic gist of a kid on Santa's lap, housecats, or brides and grooms at their weddings. It works by generating an image that literally averages the key features of the other photos. 

Kidney failure is a devastating condition and there are never enough donors for recipients - so it seems strange that anyone would be hesitant about getting one, but a new paper in the Clinical Journal of the American Society of Nephrology suggest that interventions are needed to increase women's acceptance of living donor kidney transplantation.