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Older males make better fathers says new research on beetles

By Guest PostJune 27, 2013Sciencebeetles, birds, blackbirds, hypothesis, infidelity, megan head, nerc, offspring, older males, paternal care, paternity, perception of paternity, robins, species, university of exeter, younger males

Researchers at the University of Exeter found that older male burying beetles make better fathers than their younger counterparts.

The study found that mature males, who had little chance of reproducing again, invested more effort in both mating and in parental care than younger males.

The study, published in the journal Proceedings of the Royal Society of London – B, considered how the likelihood of paternity influenced the way that males cared for young. Older males were good fathers and looked after the young even when they were unsure whether the offspring were theirs. Younger males, who had a higher chance of reproducing again, tended to care less for offspring, particularly when they were uncertain of their paternity. (more…)

Step into an anechoic chamber where sounds go to die

By Guest PostJune 26, 2013Technologyanechoic chamber, editor pamela woon, isolated space, Microsoft, microsoft tick, new film series, on the whiteboard, sounds, Technology, walking on springs, whiteboard

Microsoft’s new film series “On the Whiteboard” explores topics at the intersection of technology and culture, and introduces people, places and things behind the products.

REDMOND, WASH. – June 24, 2013 – In the second episode of Microsoft’s new film series “On the Whiteboard,” Editor Pamela Woon exposes an anechoic chamber of secrets. It’s an isolated space where you can actually hear blood pumping through your veins – because in here, there’s no echo. In this heavily padded room built on top of springs, sounds don’t bounce back, they’re absorbed. (But your body might, since you’re walking on springs.)

Researchers study the sounds of silence here, including testing and analyzing Surface to make sure that click you hear when you snap the kickstand shut is pleasing and robust to the average ear. (more…)

Researchers Find Genetic Diversity Key to Survival of Honey Bee Colonies

By Guest PostJune 26, 2013Environmentapis mellifera, commercial colonies, david tarpy, dennis van engelsdorp, eastern united states, entomology, genetic diversity, genetic sample, honey bee colonies, honey bee population, jeffery pettis, key, north Carolina, state university, survival, survival rate, university of maryland, usda

When it comes to honey bees, more mates is better. A new study from North Carolina State University, the University of Maryland and the U.S. Department of Agriculture (USDA) shows that genetic diversity is key to survival in honey bee colonies – a colony is less likely to survive if its queen has had a limited number of mates.

“We wanted to determine whether a colony’s genetic diversity has an impact on its survival, and what that impact may be,” says Dr. David Tarpy, an associate professor of entomology at North Carolina State University and lead author of a paper describing the study. “We knew genetic diversity affected survival under controlled conditions, but wanted to see if it held true in the real world. And, if so, how much diversity is needed to significantly improve a colony’s odds of surviving.” (more…)

Researchers take new look at future Colorado River flows

By Guest PostJune 26, 2013Environmentchanges in flows, colorado river flows, flow estimates, future precipitation, sensitivity of runoff

The Colorado River provides water for more than 30 million people in the U.S. West, so water managers have been eager to understand how climate change will affect the river’s flow. But scientific studies have produced an unsettling range of estimates, from a modest decrease of 6 percent by 2050 to a steep drop of 45 percent by then. (more…)

UW research: World population could be nearly 11 billion by 2100

By Guest PostJune 26, 2013Economy, General, Politicsadrian raftery, african population, billion, by 2100, fertility in africa, probability interval, projection, statistical analysis, united nations report, university of washington, uw research, world population

A new statistical analysis shows the world population could reach nearly 11 billion by the end of the century, according to a United Nations report issued June 13. That’s about 800 million, or about 8 percent, more than the previous projection of 10.1 billion, issued in 2011.

The projected rise is mostly due to fertility in Africa, where the U.N. had expected birth rates to decline more quickly than they have.

“The fertility decline in Africa has slowed down or stalled to a larger extent than we previously predicted, and as a result the African population will go up,” said Adrian Raftery, a University of Washington professor of statistics and of sociology. (more…)

Microsoft updates enterprise social road map, highlights momentum on Yammer acquisition anniversary

By Guest PostJune 25, 2013Technologyapp directory, david sacks, dawn gartin, electronic arts, email, enterprise social network, follow buttons, integration, jared spataro, like, manhattan associates inc, messages, Microsoft, microsoft corp., microsoft dynamics crm, microsoft office 365, microsoft sharepoint, mobile platforms, paid networks, public klout scores, social momentum, yammer acquisition, yammer infographic, yammer partner ecosystem, yammer platform, yammer user activity

Microsoft delivers on its enterprise social vision with accelerating user, customer and engagement growth.

REDMOND, Wash. — June 25, 2013 — Today marks one year since Microsoft Corp. announced its acquisition of Yammer, the leading provider of enterprise social networks. Since the acquisition, Microsoft’s enterprise social momentum has accelerated in all areas, including new users, paid customers, user engagement, innovation, and the ecosystem of partners selling and connecting to the Yammer platform.

Twelve-month growth highlights include the following:

Registered users have grown by more than 55 percent to nearly 8 million.
Paid networks increased more than 200 percent year over year.
Yammer user activity (i.e., messages, groups and files) has approximately doubled year over year. (more…)

Going wild could improve winged workforce

By Guest PostJune 25, 2013Environment, Naturealmonds, apples, bee, blueberries, bumble bee, bumble bee gyrations, canada, cherries, crops, flower bee interactions, flowers, going wild, jason gibbs, michigan state university, michigan team, North America, pollination, raspberries, rufus isaacs, spring, strawberries, united states, wild populations, winged workforce

Every spring in the United States, bees pollinate crops valued at about $14 billion.

A Michigan State University professor and a team of scientists are using a five-year, $8.6 million grant from the United States Department of Agriculture to keep this winged workforce operating efficiently.

Almonds, strawberries, apples, cherries, blueberries, raspberries, watermelon, cucumbers and more depend on bees to help maximize yields. But with wild honey bee populations decimated by varroa mites and other threats, farmers are dependent on beekeepers to deliver managed colonies of honey bees during peak pollination to ensure their flowers are pollinated. (more…)

Vicious cycle: Changes in brain chemistry sustain obesity

By Guest PostJune 25, 2013Healthbrain chemistry, calorie burning, diet induced obesity, obesity, obesity pathology

In a new discovery reported in the Journal of Biological Chemistry, Brown University and Lifespan researchers show that in the brain cells of rats, obesity impedes the production of a hormone that curbs appetite and inspires calorie burning. The root cause appears to be a breakdown in the protein-processing mechanism of the cells. In the lab, the researchers showed they could fix the breakdown with drugs. (more…)

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