For the first time, physicists have succeeded in describing a quantum simulator realizable with current technology. The scientists have shown that the level of control needed for such a simulator can be achieved using ultra-cold atoms in a highly excited Rydberg states.

Scientists report a protein made by a gene already associated with a handful of human inflammatory immune diseases plays a pivotal role in protecting the intestinal tract from colitis.

Microorganisms are everywhere and most of them are harmless, but they can do a lot of damage in the manufacture of pharmaceuticals or in tissue transplants. With the aid of a new device, germs can be detected in artificial cartilage within a few hours.

Recent studies have shown that behaviors such as happiness, obesity, smoking and altruism are "contagious" within adult social networks. In other words, your behavior not only influences your friends, but also their friends and so on. Researchers have taken this a step farther and found that the spread of one behavior in social networks influences the spread of another behavior -- adolescent drug use.

Experiments by anthropologists show that fossil footprints made 3.6 million years ago are the earliest direct evidence of early hominids using the kind of efficient, upright posture and gait now seen in modern humans.

Imaging epicardial adipose tissue, or the layer of fat around the heart, can provide extra information compared with standard diagnostic techniques such as coronary artery calcium scoring. The size of the layer of fat around the heart can be measured by X-ray imaging techniques such as CT or MRI.

High school seniors, take note: a wise person once said, "It is better to shoot for the stars and miss than aim at the gutter and hit it." That's right on, says a sociology professor who just completed a study to determine whether unrealized educational expectations are associated with depression among adults.

Vitamin D is quickly becoming the "go-to" remedy for treating a wide range of illnesses, from osteoporosis to atherosclerosis. However, new evidence suggests that supplementing vitamin D in those with low levels may have different effects based on patient race and, in black individuals, the supplement could actually do harm.

Scientists have introduced a new method to deterministically and precisely position silver nanoparticles onto self-assembling DNA scaffolds.

Interventional radiologists have opened the door to an encouraging potential future treatment for the nearly 200,000 women who are diagnosed with breast cancer in the United States each year: image-guided, multiprobe cryotherapy. In the first reported study, researchers were able to successfully freeze breast cancer in patients who refused surgery; the women did not have to undergo surgery after treatment to ensure that tumors had been killed.