The tropical disease malaria is caused by the Plasmodium parasite. For its survival and propagation, Plasmodium requires a protein called actin. Scientists of the Helmholtz Centre for Infection Research (HZI) in Germany used high-resolution structural biology methods to investigate the different versions of this protein in the parasite in high detail. Their results may in the future contribute to the development of tailor-made drugs against malaria–a disease that causes more than half a million deaths per year.

Sulfur left over from refining fossil fuels can be transformed into cheap, lightweight, plastic lenses for infrared devices, including night-vision goggles, a University of Arizona-led international team has found.

The team successfully took thermal images of a person through a piece of the new plastic. By contrast, taking a picture taken through the plastic often used for ordinary lenses does not show a person's body heat.

"We have for the first time a polymer material that can be used for quality thermal imaging – and that's a big deal," said senior co-author Jeffrey Pyun, whose lab at the UA developed the plastic. "The industry has wanted this for decades."

More needs to be done to investigate the risks to human health that extracting shale gas poses, suggests a personal view published on bmj.com today.

Dr. Seth Shonkoff, Executive Director for Physicians Scientists and Engineers for Healthy Energy, and his colleagues say that operations to produce natural gas from formations such as shale sometimes occur "close to human populations", but efforts to understand the potential impacts have fallen short, focusing on regulations rather than on health outcomes.

Colic affects about one in five infants in the United States annually and accounts for numerous pediatric visits during the first several months after birth.

Among the many claims of probiotic marketing is that it helps with reduction of colic symptoms but a phase III, double blind, randomized placebo controlled trial published in the British Medical Journal concluded that the use of the probiotic L reuteri for infant colic did not reduce crying or fussing in infants nor was it effective in improving infant sleep, functioning or quality of life.

The results were no different for babies receiving breast milk or formula.

Astronomers using NASA's Kepler Space Telescope report discovery of the first Earth-size planet orbiting a star in the "habitable zone" -- the range of distance from a star where liquid water might pool on the surface of an orbiting planet.

The discovery of Kepler-186f confirms that planets the size of Earth exist in the habitable zone of stars other than our sun. While planets have previously been found in the habitable zone, they are all at least 40 percent larger in size than Earth and understanding their makeup is challenging. Kepler-186f is more reminiscent of Earth.

NEW YORK, NY (April 16, 2014) — The cause of neuronal death in Parkinson's disease is still unknown, but a new study proposes that neurons may be mistaken for foreign invaders and killed by the person's own immune system, similar to the way autoimmune diseases like type I diabetes, celiac disease, and multiple sclerosis attack the body's cells. The study was published April 16, 2014, in Nature Communications.