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The gigantic respiration of crystalline solids
Previously, only amorphous polymer materials approached such levels of performance. On the other hand, these "gigantic respiration" and their respiration, which takes place at constant overall shape, is reversible. This discovery, of interest for numerous industrial applications, is published in the journal Science on March 30, 2007. view more (2007-04-02)
Mother's genes determine sperm design
A new study at the University of Sheffield, published today in Nature, has found that the size and shape of a zebra finch's sperm are genetically passed down from the mother, a fact that may also be true in humans. The paper Genetic effects on sperm design in the zebra finch, also suggests that when sperm operate in a non-competitive environment... view more... (2005-03-15)
Refining the date of the K/T boundary and the dinosaur extinction
Scientists at the University of California, Berkeley, and the Berkeley Geochronology Center have pinpointed the date of the dinosaurs' extinction more precisely than ever thanks to refinements to a common technique for dating rocks and fossils. view more (2008-04-25)
GENETIC SUSCEPTIBILITY TO INFERTILITY (p 1336)
In women, unsuccessful attachment and implantation of fertilised eggs (embryos) to the lining of the womb (endometrium), resulting in infertility, could be influenced by variation of a specific gene, conclude authors in a preliminary study described in a research letter in this week's issue of the Lancet. The failure of embryo implantation is... view more... (2001-04-25)
Study looks at mitochondrial variation in sperm traits and sperm competitive ability
University of Nevada, Reno researchers Jeanne and David Zeh of the Department of Biology have received a five-year, $650,000 grant from the National Science Foundation to investigate the effects of natural mitochondrial variation on sperm traits and sperm competitive ability. view more (2007-09-20)
Study confirms ammunition as main source of lead poisoning in condors
Lead poisoning is a major factor limiting the success of efforts to rebuild populations of the endangered California condor. view more (2006-09-01)
New Study Looks At Sensitivity To Sun
A project designed to try and explain the way genes influence sensitivity to sun is underway at the University of Edinburgh. The study will look not only at the role of ultraviolet radiation in causing skin cancer, but at its benefits in treating of patients with psoriasis, eczema and a range of other skin conditions. Professor of Dermatology... view more... (2002-04-24)
Molds for Molecules
Molecular imprints in polymers as reaction vessels for pharmaceuticals research Materials with the tiniest of cavities, which can take up other molecules as "guests", play a meaningful role in science and technology. A particularly interesting process for the synthesis of materials with precisely fitted cavities is known as molecular imprinting.... view more... (2002-11-28)
'Roof of the world' tells tale of colliding continents, Earth's interior
Geologists have learned that the height of the Tibetan Plateau, a vast, elevated region of central Asia sometimes called "the roof of the world," has remained remarkably constant for at least 35 million years. view more (2006-02-09)
Genetic variant mimics effect of heart failure medications
A genetic variation, found predominantly in African Americans, protects some people with heart failure, enabling them to live longer than expected. view more (2008-04-21)
When will Mount St Helens erupt?
Research reported in Science today (14 October 2004) shows that rocks erupted from the Mount St Helens volcano in 1980 preserve a remarkable record of the goings-on beneath the volcano in the period prior to its eruption. view more (2004-10-12)
Methane Release Could Cause Abrupt, Far-Reaching Climate Change
An abrupt release of methane, a powerful greenhouse gas, from ice sheets that extended to Earth's low latitudes some 635 million years ago caused a dramatic shift in climate, scientists funded by the National Science Foundation (NSF) report in this week's issue of the journal Nature. view more (2008-05-29)
Scripps/UCSD geophysicist among international team finding evidence of first plate tectonics
Identification of the oldest preserved pieces of Earth's crust in southern Greenland has provided evidence of active plate tectonics as early as 3.8 billion years ago, according to a report by an international team of geoscientists in the March 23 edition of Science magazine. view more (2007-03-23)
Why do some queen bees eat their worker bee's eggs?
Worker bees, wasps, and ants are often considered neuter. But in many species they are females with ovaries, who although unable to mate, can lay unfertilized eggs which turn into males if reared. view more (2006-12-05)
Does natural selection drive the evolution of cancer?
The dynamics of evolution are fully in play within the environment of a tumor, just as they are in forests and meadows, oceans and streams. This is the view of researchers in an emerging cross-disciplinary field that brings the thinking of ecologists and evolutionary biologists to bear on cancer biology. view more (2006-11-20)
Antibiotic prescribing should be standardized across Europe to help tackle resistance
Antibiotic prescribing for respiratory illnesses should be standardised across Europe to help reduce inappropriate prescribing and resistance. view more (2009-06-24)
Variation in prostate stem cell antigen gene raises bladder cancer risk
Researchers have pinpointed a specific gene variation that causes increased risk of urinary bladder cancer, according to a scientific team led by The University of Texas M. D. Anderson Cancer Center. view more (2009-08-03)
International team analyzes human genetic variation in key immune region
An international group of researchers today unveiled a detailed map of human genetic variation within the major histocompatibility complex (MHC), the most important region of the human genome encoding the human response to infection, autoimmune disease and organ transplantation. view more (2006-09-26)
Individuals vary their immune response according to age, sex and the costs
Is it always good to respond maximally when pathogens or disease strike, or should individuals vary their immune response to balance immediate and future costs? view more (2008-09-11)
New isotope cluster could lead to better understanding of atmospheric carbon dioxide
A team of researchers has discovered an unexpected concentration of a certain isotopic molecule in parts of the stratosphere that could have implications for understanding the carbon cycle and its response to climate change. view more (2009-07-15)
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