Researchers at University of California, San Diego School of Medicine have documented the accuracy of three new tests for more rapidly diagnosing drug-resistant forms of tuberculosis, which are much harder and more expensive to treat and which, experts say, represent a major threat to global public health.
In a survey of NASA's Hubble Space Telescope images of 2,753 young, blue star clusters in the neighboring Andromeda galaxy, astronomers have found that M31 and our own galaxy have a similar percentage of newborn stars based on mass.
Using a new technique to analyze 52 years of international conflict, researchers suggest that there may be no such thing as a 'democratic peace.'
Research led by University of Pennsylvania's Carolina López found a viral product that promotes a strong immune response against respiratory syncytial virus, a threat to infants and the elderly.
'Gaydar' -- the purported ability to infer whether people are gay or straight based on their appearance -- seemed to get a scientific boost from a 2008 study that concluded people could accurately guess someone's sexual orientation based on photographs of their faces. In a new paper, researchers from the University of Wisconsin-Madison challenge what they call 'the gaydar myth.'
Men and women exposed in early gestation to the man-made Ukrainian Famine of 1932-33 in regions with extreme food shortages were 1.5 times more likely to be diagnosed with Type 2 diabetes in adulthood. There was no diabetes increase among individuals born in regions with no famine. This is the first large-scale study of the relationship between famine severity during different stages of prenatal development and Type 2 diabetes risk.
With limited funding available, a common strategy for conservation planners is to identify areas of high species richness and endemicity, but this approach ignores evolutionary history and so may overlook important regions for conservation. A recent study, available in Applications in Plant Sciences, argues for the importance of incorporating phylogenetic diversity metrics in conservation planning. The study tests a dozen commonly used metrics so users can determine which metrics should be used in which situations.
Natural selection is a race to reproduce, a competition between individuals with varying traits that helps direct evolution. How do the structures of gene networks determine which individuals appear on the starting line, silently influencing evolution before competition has even begun? University of Illinois researchers Karen Sears and Zoi Rapti, along with collaborators at Illinois and four other institutions, have addressed this question by exploring the gene network that guides limb development in mammals.
Upper-level westerly winds have been affecting Tropical Storm Fred in the far eastern Atlantic Ocean and continue to do so today, September 3. Infrared imagery from NASA's Aqua satellite showed the highest thunderstorms pushed southeast of the storm's center.
An NCEAS study predicts that climate change will cause significant reshuffling of marine biodiversity.