CT-Scans create an image by using Röntgen radiation, more widely known as X-rays — having a much higher energy than visible light, they penetrate through most materials and are captured by a special film on the other side.
Connecting traditionally problematic areas of the world to the Internet is high on the list of many virtual giants already, and some time ago, in 2013, Google also stepped up to the challenge. Their solution was, in classic Google fashion, ambitious, simple, and light.
Using functional magnetic resonance imaging, scientists from the universities of Michigan and Pennsylvania scanned the brains of 50 smokers while they viewed anti-smoking ads. They recorded their neural activity spikes as they watched the sample of 40 images one at a time, looking for increase activity in the medial prefrontal cortex, the area that handles decision making processes.
Ahh, the phallus. In most sexually-reproductive species, half of the individuals lack one, while the other half is constantly trying to share theirs as much as possible with the first group, with varying degrees of success — bragging, fighting or impressing their way to the continuation of the species. Marvelous!
French scientist working on the Hall thrusters — an advanced type of engine that harnesses a stream of plasma to generate forward momentum — have recently figured out a way to optimize them, allowing them to run on (wait for it) a staggering 100 million times less fuel than conventional chemical rockets. The research has been published in Applied Physics Letters.
The next time you throw away an aluminium can, picture the can half full of gasoline. That’s how much energy goes into making it, and how much energy will have to be spent to produce a new one rather than recycle.
A preliminary study from Switzerland, published this month in the Annals of Neurology, proved the effectiveness of a new method of non-invasive brain surgery: using a newly-developed operating device that relies on ultrasound, in conjunction with magnetic resonance imaging (MRI), allowed neurosurgeons to precisely remove small pieces of brain tissue in nine patients suffering from chronic pain without removing skin or skull bone. Researchers now plan to test it on patients with other disorders, such as Parkinson’s. Neal Kassell, neurosurgeon at the University of Virginia, not directly involved in the study.
Cristiano Menezes of the Brazilian Agricultural Research Corporation has discovered farming behaviors in bees, adding them to the list of social insects that practice agriculture.
A recent study published Wednesday in the journal Nature shows that there is a strong functional relationship between a region’s average recorded temperature and economic productivity — further warning of the damage climate warming would inflict on our economy.
A recent U.S. study shows how the upward trend in economic damage from hurricanes correlates very closely to the influence global warming has on the number and intensity of hurricanes. Published in Nature Geoscience, it concludes that the commonly cited reasons for growing hurricane damage — increases in vulnerability, value, and exposure of property — don’t stand up very well to scrutiny.
What exactly makes you thirsty? Dehydration, obviously, but how does your brain know that your body needs water? And how does that grey, squishy lump resting in your cool and comfortable cranium, know when your body needs to heat up or cool off? Scientists at the McGill University Health Centre Research Institute (RI-MUHC) and Duke University have asked themselves just that, and being scientists, went ahead to find out.
A research effort at Winship Cancer Institute recently identified a substance in orange lichen and rhubarb that has the potential to be used as a new anti-cancer drug. The substance, an orange pigment known as parietin or physcion, slows the growth and can even kill leukemia cells harvested from patients, without obvious toxic effects on human cells, the study authors report.
In an experiment proposal that sounds more like an evil genius’ plan than a reputable science endeavour, CERN’s LHC atom smasher in Geneva, Switzerland will be cranked up to the highest energy levels ever, as scientists hope to detect or create miniature black holes. If successful, scientists hope that the experiment will uncover extra dimensions hidden in our universe.
Researchers have discovered a new species of banana christened “nanensis”, belonging to the Musa genus, sharing a place in the family Musaceae with more than 70 other species of bananas and plantains. It’s scientific name honors the province of Nan where the type specimens were collected.
Prosthetics has come a long way from its humble beginnings – the crude wooden legs of yore are a far cry from the technological marvels we can create to replace our limbs today. However, there is one thing that, with all our know-how, we haven’t yet been able to incorporate in them: a sense of touch. A research team from Stanford University aims to fix this shortcoming, and has developed technology that can “feel” when force is exerted upon it, then transmit the sensory data to brain cells – in essence, they’ve created an artificial skin.
Recent fossils unearthed in the Chinese province of Daoxian come to unravel the story of humanity’s spread as we know it today. The find consists of 47 teeth, belonging to modern humans, but what’s really important is their age – they have been dated to 80,000 years ago. This number doesn’t fit with the “Out of Africa” migration theory, holding that humans originate and have spread from the horn of the continent all around the world. The theory as we know it can’t explain human presence in the area for another 20,000 years.
It’s easy to assume that with economic gain comes happiness — we live in capitalism, after all. But science comes to prove us all wrong yet again, and shows that the link between economics and happiness is much more complicated that we thought. Money can’t buy happiness, it seems.
Chinese researchers discovered a chemical compound that works just as well as morphine — without any of the negative side effects. The substance is derived from the venom of a centipede native to China. The discovery has huge medical applications, and could potentially reduce the country’s military reliance on morphine for battlefield use.
The first global analysis of how marine environments react to the ever-increasing levels of CO2 that humanity is pumping into the atmosphere does not bode well at all for tomorrow’s would-be fishers. Published today in the journal Proceedings of the National Academy of Sciences (PNAS), the work of the University of Adelaide’s marine ecologists states that the warming and expected ocean acidification is likely to produce a reduction in diversity and numbers of various key species that underpin marine ecosystems around the world.
Researchers stumbled upon a new tool to fight cancer in a rather unexpected place; while searching for a vaccine against malaria in pregnant women, a team of Danish scientists found that, simply put, armed malaria proteins are remarkably good at killing cancer cells. They hope to have a working prototype ready for human trials within four years’ time. Their discovery has been published in the scientific journal Cancer Cell.