Science and research

Radiation exposure is an occupational hazard for cardiologists performing a procedure called percutaneous coronary interventions (PCI -- better known as angioplasty), which helps restore blood flow to blocked arteries in patients with coronary artery disease. Lead aprons help, but they're not perfect, and they're heavy enough to take a toll.

Now a new system that employs robot-assisted stent and balloon placements to restore blood flow has received FDA clearance this week. Called CorPath 200, it allows cardiologists to work from inside a lead-lined cockpit, not only minimizing their radiation exposure but also improving their view of the angiography … Read more

Almost a year ago to the day, we wrote about a water-walking microrobot inspired by insects. Now the Jesus bug has ascended over the waves, as it were, at speeds up to 3.6 mph.

Qinmin Pan and colleagues from the Harbin Institute of Technology in China have redesigned their critter so that it jumps up and down like a real water strider, according to research published in ACS Applied Materials & Interfaces.

The team wanted to improve the Jesus bug-bot so that its legs would not break the surface of the water when leaping. … Read more

Though YouTube shouldn't exactly be your most trusted source of medical advice, in at least one case, videos on the site can help people manage a common form of vertigo without having to see a doctor, according to researchers from the American Academy of Neurology.

However, as is the case with pretty much any aggregator on the Internet (think Wikipedia), one should proceed with a healthy dose of caution, because just over half the videos are accurate -- which means, of course, that the others aren't.

The researchers who reviewed YouTube videos of the Epley maneuver, which can … Read more

MOUNTAIN VIEW, Calif. -- Google held the final round of its second annual international science fair on Monday morning, hosting 15 contestants from around the world between the ages of 13 and 18.

The science fair this year has grown considerably as not only did Google receive thousands of entries from more than 100 countries, but the program now also accepts entries in not just English but also 14 different languages.

Most of the projects derive from the United States, but there were also contestants present from India, Canada, Spain, the Ukraine, Swaziland, and Malta. Entrants are also judged in … Read more

All fat is not equal. Brown adipose tissue, more commonly called brown fat and abundant in both newborns and hibernating mammals, is the good fat, playing a prominent role in how quickly our bodies burn calories.

Brown fat also produces as much as 300 times more heat than any other tissue in the body, according to scientists at the University of Nottingham, so these scientists have developed a thermal imaging technique to measure not only a person's brown fat stores but also how much heat that fat produces.… Read more

Researchers are reporting that they have found, for the first time, that tiny electrical spinning tops ("rotors") within the heart cause atrial fibrillation (AF), a type of arrhythmia in which the heartbeat is faster and irregular.

What's more, they found that by targeting the so-called eye of the storm, they could actually slow or even terminate the AF, the multidisciplinary team from UC San Diego, UCLA, and Indiana University reports in the July issue of the Journal of the American College of Cardiology.

Today, catheter ablation is a common therapy used to treat AF, but because the … Read more

A wireless musical glove developed at Georgia Tech not only teaches users to play songs on the piano, but may also improve the sensation and mobility of the hands of people who have suffered spinal cord injuries, researchers report.

The Mobile Music Touch (MMT) device, which works alongside a computer and a keyboard, improved rehabilitation even in patients who had sustained the injury more than a year earlier -- a point at which improvements tend to be minimal at best.… Read more

Citing a lack of innovation in fire-extinguishing methods over the last 50 years, the Defense Advanced Research Projects Agency (DARPA) last week revealed an ear-buzzing new method for putting out fires: blast it with fine-tuned frequencies.

Officially referred to as "acoustic suppression of flame," this simple yet potentially revolutionary method simply relies on two speakers playing a specific low frequency toward the fire.

The resulting acoustics increase air velocity, making it easier to alter the origin of the fire's combustion, also known as the flame boundary layer. … Read more

While outdoor navigation has been mastered with GPS satellites and cell phone triangulation, indoor navigation has proven more tricky.

Now, a group of researchers at the University of Oulu in Finland has tapped the Earth's magnetic field to create an indoor positioning system (IPS). The researchers say their approach was inspired by studying the way homing pigeons and lobsters use anomalies in the magnetic field to navigate their travels.

Researchers explain in a paper (PDF) -- titled "Ambient magnetic field-based indoor location technology / Bringing the compass to the next level" -- that the same magnetic field that … Read more