After an interventional radiology intranasal treatment, migraine patients report using less pain-relief medicine for headaches, according to a paper at the Society of Interventional Radiology's Annual Scientific Meeting.

Clinicians used a treatment called image-guided, intranasal sphenopalatine ganglion (SPG) blocks to give patients enough ongoing relief that they required less medication to relieve migraine pain.

Too cold for a penguin? An Ice Age brought on by global warming so severe penguins had to move?

Indeed. During the last interglacial, what is colloquially called an ice age though it has been such non-stop for a few million years, only three populations of emperor penguins may have survived, because much of the rest of Antarctica was uninhabitable due to the amount of ice. 

In a new study, 221 college students participated in an online chat room in which they watched a fellow student get "bullied" right before their eyes.

Only 10 percent of the students who noticed the abuse directly intervened, either by confronting the bully online or helping the victim.

The abuse wasn't real - the bully and the victim were part of the experiment - but the participants didn't know that.

"The results didn't surprise me," said Kelly Dillon, lead author of the study and a doctoral student in communication at The Ohio State University.

"Many other studies have shown bystanders are reluctant to get involved when they see bullying. The results disappointed me, as a human, but they didn't surprise me as a scientist."

The therapeutic promise of human stem cells is indisputably huge, but the process of translating their potential into effective, real-world treatments involves deciphering and resolving a host of daunting complexities.

Writing in the February 25 online issue of the journal PLOS ONE, researchers at University of California, San Diego School of Medicine, with collaborators from The Scripps Research Institute (TSRI), have definitively shown for the first time that the culture conditions in which stem cells are grown and mass-produced can affect their genetic stability.

The activity of the Sun is an important factor in the complex interactions that control our climate. We don't really even understand the impacr of the sun - it is not constant over time, but has greater significance when the Earth is cooler, according to a new paper in Geology.

There has been discussion as to whether variations in the strength of the Sun have played a role in triggering climate change in the past, but more and more research results clearly indicate that solar activity - i.e. the amount of radiation coming from the Sun - has an impact on how the climate varies over time.

Not all storks migrate to Africa, many spend the winter in the Iberian Peninsula, where landfills have become a permanent source of food. Scientists from Extremadura have analyzed the presence of pollutants and pesticides (some prohibited in Spain) in the blood of nestlings from three colonies, two of which are close to landfill sites, and the results reveal that the main source of contamination can be due to the use of insecticides still used in African countries where the birds migrate to, who transfer their contaminated load onto their offspring through their eggs.