Climate March, New York City

By Alessandro R Demaio, Harvard University

Five families of notothenioid fish inhabit the Southern Ocean, the frigid sea that encircles Antarctica, manufacture their own "antifreeze" proteins to survive.

Their ability to live in the icy seawater is so extraordinary that they make up more than 90 percent of the fish biomass of the region.
 They also suffer an unfortunate side effect: The protein-bound ice crystals that accumulate inside their bodies resist melting even when temperatures warm. 

There is a downside to 'follow the money' arguments made by academics against scientists in pharmaceutical and oil companies - it comes back to haunt them also.

A paper in PNAS finds that Americans seem wary of researchers because they get grant funding and do not trust scientists pushing political and cultural agendas. The public prefers at least the pretense of impartiality from scientists who are paid by taxpayers. And it wouldn't hurt if scientists came off less angry and a little "warmer" when they engage in outreach, according to a new review published by Princeton University's Woodrow Wilson School of Public and International Affairs in the Proceedings of the National Academy of Sciences (PNAS).

Laparoscopic cholecystectomy, a minimally invasive procedure to remove the gallbladder, is one of the most common abdominal surgeries in the U.S.

Some medical centers move patients quickly into surgery while others wait. Being told to wait can alarm patients but is it making a difference?

Not really, finds a paper in the American Journal of Surgery. Gallbladder removal surgery can wait until regular working hours rather than rushing the patients into the operating room at night and there is no risk of harm. 

In the early morning hours of March 4th, 2002, a reconnaissance team of US Navy SEALs became pinned down on the ridge dividing the Upper and Lower Shahikot valley in Afghanistan.

A Chinook helicopter with 21 men on a mission to rescue them was heading for the snowcapped peak of Takur Ghar  when U.S. military officers in Bagram radioed them with a message not to land on the peak, because the mountaintop was under enemy control. 

The rescue team never got the message. Just after daybreak, the Chinook took heavy enemy fire and it crash-landed on the peak. Three men were killed in the ensuing firefight.

In 1993, Professor John Anthony Allan of King’s College London coined the term "Virtual water" because the term 'embedded water' "did not capture the attention of the water managing community" and he wanted to create a metaphor to talk about why the long-predicted water wars have still not happened.

Arctic sea ice coverage declined to its annual minimum on September 17th and the National Snow and Ice Data Center (NSIDC) at the University of Colorado, Boulder find that this year's minimum extent is similar to last year's and below the 1981-2010 average of 2.40 million square miles. 

Over the 2014 summer, Arctic sea ice melted back from its maximum extent reached in March to a coverage area of 1.94 million square miles, according to analysis from NASA and NSIDC scientists. 

If you had an angel walking beyond you, would you be more reckless or more cautious?

It's surprising how many people believe that guardian angels watch over them to keep them safe in a dangerous world, and it's even more surprising that those who believe are actually less inclined to take risks despite this protection. 

Scholars David Etkin, Jelena Ivanova, Susan MacGregor and Alalia Spektor surveyed 198 individuals and found that of those who believe in guardian angels, 68% said that this belief affects how they take risks. 

What causes segregation? No one knows. No one even knows where the line is. For example, in science classes, there is worry that if there are not enough people 'like' an individual, they will feel intimidated and excluded. But when there are lots of people like an individual, they tend to self-segregate into groups based on gender and ethnicity.

On the city-wide level, environmentalists advocate very dense housing because it has lower strain on the land, but a new study in PNAS finds that dense cities lead to more segregation, even in previously integrated neighborhoods. Racially and economically mixed cities are more likely to stay integrated if the density of households stays low.

Nature Publishing Group has announced that Nature Communications will only accept open access research submissions starting October 20th 2014.

This is a big win for open access.  The 2013 Impact Factor for Nature Communications is 10.742, according to the 2013 Journal Citation Reports® Science Edition (Thomson Reuters, 2014). When it launched in 2010 it was a hybrid journal, publishing both open access and subscription content, but they now get over 1500 submissions every month so open access is viable.