Research

If you'd like a better understanding of what it takes for sperm to be considered fertile, go grab your measuring spoons and look at the quarter teaspoon. Roughly that amount of ejaculate should boast anywhere between 20 million and 150 million sperm. Anything less than 20 million and fertility just might be an issue.

So Loes Segerink, a researcher at the University of Twente in the Netherlands, has developed a "fertility chip" that can accurately count one's sperm concentration as well as measure its mobility (when discussing sperm the synonym "motility" is often used). What's more, the test can be taken at home, with the ejaculate being, ahem, collected in a more private environment.

While simple home tests are already commercially available, the concentration readings are, well, simple, and indicate only whether sperm concentration is above or below that 20 million mark. But one man's sperm concentration of 19 million is certainly more fertile than another man's count of 1 million.

Segerink, who will be defending her doctoral dissertation in November, says the sperm flows past a liquid-filled channel on the chip beneath electrode "bridges." When cells pass beneath these bridges, a brief fluctuation in electrical resistance occurs. By counting these events, the chip is counting sperm.… Read more

At UC Berkeley's Geospatial Innovation Facility software developers are building a Web-based mapping tool to help scientists prepare for the changing climate conditions in California.

The team has culled data from various climate research organizations to project what different climates might look like over a 150-year period. SmartPlanet visited the lab to see a demo of how the tool works.

This video first appeared at SmartPlanet under the headline "Mapping tool models climate change in California."

What does it take to make it to 100 years old? The Archon Genomics X Prize hopes to find out.

As I've researched "extreme" aging in recent years--that is, the genes and lifestyles of centenarians (100 and older) and supercentenarians (110 and older)--a common refrain I hear from my younger peers is, "I don't want to get that old. It sounds miserable."

Whether or not that's true is something most of us will never find out. The reality is that those who make it past 100 are an exceedingly rare breed of … Read more

LONDON--Multitouch revolutionized user interfaces, and if Nokia researchers get their way, a mobile device that's sensitive to how it's being flexed could be the next revolution.

At the Nokia World show here, the Finnish mobile phone maker showed off its "Nokia kinetic device" with a flexible display. Gripped with two hands, it would scroll through music collections or photo albums when twisted. Bowing it inward or outward zoomed photos in and out or paused and played music, while tapping the corners panned through photos.

While it was a real computing device with a real OLED display, … Read more

Poor mail carriers. Not only do they have to put up with threatening dogs and foul weather, but they spend their days touching what may be one of our dirtiest everyday objects: mailbox handles.

The only worse offender? Gas pump handles.

So says a new study by researchers at hygiene solutions firm Kimberly-Clark Professional, who took more than 350 swabs from a variety of everyday objects in Atlanta, Chicago, Dallas, Los Angeles, Miami, and Philadelphia to measure ATP (Adenosine Triphosphate) levels commonly used to detect contamination.

While they did not distinguish between contamination types (i.e. molds versus bacteria), they … Read more

Sarah Churman is the unlikeliest Internet star. The Texas stay-at-home mom of two little girls has somewhat ordinary interests--she loves to read, watch movies, and attend concerts with her husband of almost 10 years, Sloan.

But on September 26 of this year, Churman was catapulted to YouTube fame due to an intimate, home movie that went viral. She was born deaf. But on that day, she heard her own voice for the very first time. The 91-second video clip brought this viewer goosebumps, tears, and an empathy for this remarkable woman.

When I interviewed Sarah and Sloan Churman at medical offices in San Jose, Calif., she explained to me that the deaf community tends to be divided into two categories: those who want to use technology to restore their hearing and those who try to make the most of life without it. She is very firmly rooted in the first camp and has spent a good deal of her adult life researching the latest hearing devices to come onto the market. In May 2011, Churman heard a radio ad for Envoy Medical's Esteem implant. That set the balls in motion for a summer of hope, frustration, high emotion, and ultimately, success. … Read more

Researchers at Stanford are developing new sensors so flexible and pressure-sensitive that they could be used to make touch-sensitive prosthetic limbs, pressure-sensitive badges, and more.

By incorporating a transparent film of carbon nano-springs, the sensor "can register pressure ranging from a firm pinch between your thumb and forefinger to twice the pressure exerted by an elephant standing on one foot," says postdoctoral researcher Darren Lipomi, co-author of a paper published October 23 in the journal Nature Nanotechnology. "None of it causes any permanent deformation."

The team built those nano-springs by airbrushing nanotubes (which are in liquid … Read more

Men in their 20s have a lot to worry about.

Will they ever get a job? Will they ever keep that job for more than a few months? Will they ever have enough money to pay their student loans and still be able to spend $100 a week on pot? Will they ever put their pants on the right way round at the first attempt?

Now it seems that something they do for recreation, in order to take their mind off their worries, is having increasingly worrying effects.

My hard-core reading of Psychology Today caused me to come across a … Read more

With about one in six pregnancies ending in miscarriage or stillbirth, plenty of women have to endure the loss of a developing life. For those who turn to online message boards, a new survey finds, there can be great solace in the company of others who have experienced the same loss.

The survey of more than 1,000 anonymous women on 18 messages boards was launched by researchers at the University of Michigan and Georgia Health Sciences University to better understand how women use these forums and why.

The most common reason women gave for choosing to participate in message … Read more