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145,858 articles from ScienceDaily

Genome Study Shines Light On Genetic Link To Height

Using a new "genome-scanning" method, a team of scientists has identified the first robust link between genes and stature in humans. A single letter change in a gene called HMGA2 enables people who carry it to gain as much as a centimeter in height. The work provides insights into how genes hardwire growth in humans and suggests that finding additional height-related genes may be feasible.

Lettuce, Leafy Greens And E. Coli

The rise in year-round consumption of fresh leafy greens such as lettuce and baby spinach is increasing the difficulty of keeping produce free from contamination by food poisoning bacteria, according to scientists.

Low-cost Recipe For Patterning Microchips Developed

Creating ultrasmall grooves on microchips -- a key part of many modern technologies -- is about to become as easy as making a sandwich, using a new process invented by Princeton engineers. The simple, low-cost technique results in the self-formation of periodic lines, or gratings, separated by as few as 60 nanometers -- less than one ten-thousandth of a millimeter -- on microchips.

New Viruses To Treat Bacterial Diseases: 'My Enemies' Enemy Is My Friend'

Viruses found in the River Cam in Cambridge, famous as a haunt of students in their punts on long, lazy summer days, could become the next generation of antibiotics, according to scientists. With antibiotics now over-prescribed for treatments of bacterial infections, and patients failing to complete their courses of treatment properly, many bacteria are able to pick up an entire array of...

Regulator Of Lipid Metabolism Ensures High Quality Breast Milk

Mouse mammary glands deficient in PPAR³, a nuclear receptor that regulates the storage of fat, produce toxic milk that causes inflammation and baldness in suckling pups, report scientists at the Salk Institute for Biological Studies. "We were quite surprised by the unexpected quality control mechanism that ensures the quality of breast milk," says Ronald M. Evans, Ph.D., professor in the Salk...


Baiji Dolphin Previously Thought Extinct Spotted In The Yangtze River

The reported sighting of a Yangtze River dolphin, or Baiji, means there is still a chance for people to take further action and protect the cetaceans in the Yangtze from extinction, according to World Wildlife Fund. Based on the river's geographic and hydrological complexity and the official definition of extinction by IUCN, WWF and many scientists agreed that this species was "functionally...

Breast Cancer Risk: Breast Density Gene Located

Studying the DNA of 889 people, gene hunters have identified a region on chromosome 5p that is significantly associated with dense breast tissue, a known risk factor for breast cancer. The study suggests that genes which influence breast density could serve as a predictive marker for disease and provide a biological target for agents that may reduce breast cancer risk by reducing breast density....

Looking For Life In And Under Antarctic Ice

Antarctica is home to the largest body of ice on Earth. Prior to approximately 10 years ago, no one thought that life could exist beneath the Antarctic ice sheets, which can be more than two miles thick in places, because conditions were believed to be too extreme. Now there is hope. If confirmed, "immortal cells" could prove potential for life on Mars and Europa, one of Jupiter's moons.