Posted By News On July 22, 2016 - 1:34am
Dating back nearly 150 years, a classic example of symbiosis has been the lichen: a mutually helpful relationship between an alga and a fungus.
Now, that well-known dualistic relationship is being challenged. Researchers at the University of Montana, working together with colleagues from Austria, Sweden and Purdue University, have found that some of the world's most common lichen species actually are composed of three partners -- not the widely recognized two.
Posted By News On July 22, 2016 - 1:30am
By following honeyguides, a species of bird, people in Africa are able to locate bees' nests to harvest honey. Research now reveals that humans use special calls to solicit the help of honeyguides and that honeyguides actively recruit appropriate human partners. This relationship is a rare example of cooperation between humans and free-living animals.
Posted By News On July 22, 2016 - 1:28am
When honey-hunters in Mozambique call out to birds in the hopes that their feathered companions will lead them to honey, the birds, in fact, recognize and respond to these specialized calls, a new study confirms. The results reveal how birds are able to attach a specific meaning to the human's call for cooperation, representing a rare case of mutualism between humans and a wild animal. Indicator indicator is a species of bird that's known to act as a honeyguide for humans, flitting from tree to tree to indicate where beehives are hidden above.
Posted By News On July 22, 2016 - 4:19pm
A new study provides more evidence that identical sections of DNA can match up with each other without the help of other molecules.
DNA molecules in our bodies carry genetic information encoded in segments called genes. Each gene encodes a certain attribute, feature or function in living organisms. However, genes are regularly damaged and need to be repaired.
Posted By News On July 22, 2016 - 4:17pm
As tropical storm Frank was forming in the Eastern Pacific Ocean, NASA analyzed rainfall and cloud heights and found "hot towers" that indicated intensification was likely.
Posted By News On July 22, 2016 - 4:16pm
Researchers at Columbia University's Mailman School of Public Health and the Centers for Disease Control studied the prevalence of suicide among people with epilepsy compared to the population overall and estimated that the annual suicide mortality rate among those with epilepsy was 22 percent higher than in the general population. Results are online in the journal Epilepsy and Behavior.
Posted By News On July 22, 2016 - 4:15pm
Most people don't think of fungal infections as deadly -- they are generally viewed as annoyances -- athlete's foot, for instance.
But for many weakened patients in the hospital, fungal infections can be life threatening. Some experts estimate that tens of thousands of patients die every year from these infections. Recent research has also found that wounded soldiers in Iraq and Afghanistan have sometimes died after fungus from soil is driven deep into their wounds, causing untreatable infections.
Posted By News On July 22, 2016 - 11:13am
Children as young as 9 months-old prefer to play with toys specific to their own gender, according to a new study from academics at City University London and UCL.
The paper, which is published in the journal of Infant and Child Development, shows that in a familiar nursery environment significant sex differences were evident at an earlier age than gendered identity is usually demonstrated.
Posted By News On July 22, 2016 - 1:37am
The significant role of beta cell 'hubs' in the pancreas has been demonstrated for the first time, suggesting that diabetes may due to the failure of a privileged few cells, rather than the behaviour of all cells.
Researchers used optogenetic and photopharmacological targeting to precisely map the role of the cells required for the secretion of insulin.
The team believe that the findings, published in Cell Metabolism, could pave the way for therapies that target the 'hubs'.
Posted By News On July 22, 2016 - 1:36am
DALLAS, July 21, 2016 -- Bleeding inside the lining of the brain (subarachnoid hemorrhage) is significantly more common among smokers, especially female smokers, than among people who do not smoke, according to new research in the American Heart Association's journal Stroke.