Posted By News On June 29, 2015 - 9:08pm
Pink salmon that begin life in freshwater with high concentrations of carbon dioxide, which causes acidification, are smaller and may be less likely to survive, according to a new study.
The risks of ocean acidification on marine species have been studied extensively but the impact of freshwater acidification is not well understood. The study is one of the first to examine how rising carbon dioxide levels caused by climate change can impact freshwater fish.
Posted By News On June 29, 2015 - 3:29pm
Observations of Greenland's Helheim Glacier link the process through which chunks of ice at the edge of a glacier break away, which has been hard to study, to seismically detectable events known as glacial earthquakes, which have been increasing in number in recent years.
Because seismic signals from these events can be detected by instruments located all over the globe, it should be possible to use glacial earthquakes as proxies for the glacier edge breaking process, known as calving.
Posted By News On June 28, 2015 - 3:59pm
A collaborative group of Japanese researchers has demonstrated that the Earth's daily rotation period (24 hours) is encoded in the KaiC protein at the atomic level, a small, 10 nm-diameter biomolecule expressed in cyanobacterial cells.
Posted By News On June 27, 2015 - 7:13pm
The 2014-2015 flu vaccine didn't work as well compared to previous years because the H3N2 virus recently acquired a mutation that concealed the infection from the immune system. A study published on June 25 in Cell Reports reveals the major viral mutation responsible for the mismatch between the vaccine strain and circulating strains. The research will help guide the selection of viral strains for future seasonal flu vaccines.
Posted By News On June 26, 2015 - 7:22pm
Too much male sexual attention harms attractive females, according to a new Australian and Canadian study on fruit flies.
Associate Professor Steve Chenoweth from The University of Queensland's School of Biological Sciences said the study showed that male harassment of females hampered the species' ability to adapt to new environmental conditions.
"We found that sexually attractive females were overwhelmed by male suitors," he said.
Posted By News On July 1, 2015 - 7:00pm
We've long known that beneath the scenic landscapes of Yellowstone National Park sleeps a supervolcano with a giant chamber of hot, partly molten rock below it.
Though it hasn't risen from slumber in nearly 70,000 years, many wonder when Yellowstone volcano will awaken and erupt again. According to new research at Arizona State University, there may be a way to predict when that happens.
Posted By News On July 1, 2015 - 12:32am
Snake skin inspired surfaces smash records, providing an astonishing 40% friction reduction in tests of high performance materials.
Posted By News On June 30, 2015 - 10:11am
Trees that can tolerate soil pollution are also better at defending themselves against pests and pathogens. "It looks like the very act of tolerating chemical pollution may give trees an advantage from biological invasion", says Dr Frederic E. Pitre of the University of Montreal and one of the researchers behind the discovery.
Unexpectedly, whilst studying the presence of genetic information (RNA) from fungi and bacteria in the trees, the researchers found evidence of a very large amount of RNA from a very common plant pest called the two-spotted spidermite.
Posted By News On June 29, 2015 - 12:42pm
A technique to increase the flow of blood from the umbilical cord into the infant's circulatory system improves blood pressure and red blood cell levels in preterm infants delivered by Cesarean section, according to a study funded by the National Institutes of Health.
Posted By News On June 26, 2015 - 11:14pm
Overexposure to sunlight, which is damaging to natural photosynthetic systems of green plants and cyanobacteria, is also expected to be damaging to artificial photosynthetic systems. Nature has solved the problem through a photoprotection mechanism called "nonphotochemical-quenching," in which excess solar energy is safely dissipated as heat from one molecular system to another. With an eye on learning from nature's success, a team of Berkeley Lab researchers has discovered a surprising key event in this energy-quenching process.