Nitric oxide (NO) is one of the most important signaling molecules in living cells, carrying messages within the brain and coordinating immune system functions. In many cancerous cells, levels are perturbed, but very little is known about how NO behaves in both healthy and cancerous cells.
As transistors get smaller, they also become less reliable. So far, computer-chip designers have been able to work around that problem, but in the future, it could mean that computers stop improving at the rate we’ve come to expect.
A rudimentary form of life that is found in some of the harshest environments on earth is able to sidestep normal replication processes and reproduce by the back door, researchers at The University of Nottingham have found.
It doesn't take a Watson to realize that even the world's best supercomputers are staggeringly inefficient and energy-intensive machines. Our brains have upwards of 86 billion neurons, connected by synapses that not only complete myriad logic circuits; they continuously adapt to stimuli, strengthening some connections while weakening others.
For the first time, a NASA airborne campaign will measure changes in the height of the Greenland Ice Sheet and surrounding Arctic sea ice produced by a single season of summer melt.
As drylands of the world become even drier, water will not be the only resource in short supply. Levels of nutrients in the soil will likely be affected, and their imbalance could affect the lives of one-fifth of the world’s population. That includes people living in Arizona, who may be in for a dustier future.
Scientists at the Babes-Bolyai University in Cluj-Napoca, a city in NW Romania, have developed artificial blood and initial test indicate that it may be effective.
Fluid jets are all around us: from inkjet printing, to the “Old Faithful” geyser in Yellowstone National Park, to cosmological jets several thousand light years long.
Understanding Earth’s dynamic climate requires knowledge of more than just greenhouse gases. One of the key measurements scientists measure is reflected solar radiance, or the amount of outgoing sunlight energy scattered from Earth’s surface and atmosphere. Watching solar radiances over time helps scientists gauge and better understand environmental changes like global warming.
Gimball bumps into and ricochets off of obstacles, rather than avoiding them. This 34 centimeter in diameter spherical flying robot buzzes around the most unpredictable, chaotic environments, without the need for fragile detection sensors.
Researchers have taken the first step towards a radical new architecture for the internet, which they claim will transform the way in which information is shared online, and make it faster and safer to use.
After 10 years of production, shale gas in the United States cannot be considered commercially viable, according to several scientists recently presenting at the Geological Society of America meeting in Denver.
Spending time immersed as a virtual character or avatar in a role-playing video game can numb you to realizing important body signals in real life. This message comes from Ulrich Weger of the University of Witten/Herdecke in Germany and Stephen Loughnan of Melbourne University in Australia, in an article in the journal Psychonomic Bulletin & Review, published by Springer.
Oxygen in the atmosphere and ocean rose dramatically about 600 million years ago, coinciding with the first proliferation of animal life. Since then, numerous short lived biotic events — typically marked by significant climatic perturbations — took place when oxygen concentrations in the ocean dipped episodically.
Imagine you order a delivery of several glass vases in different colors. Each vase is sent as a separate parcel. What would you think of the courier if the parcels arrive apparently undamaged, yet when you open them, it turns out that all the red vases are intact and all the green ones are smashed to pieces?
A team of scientists, led by the University of Southampton, has developed a new method to help the world's coasts adapt to global sea-level rises over the next 100 years.
After emitting its first significant solar flares since June 2013 earlier in the week, the sun continued to produce mid-level and significant solar flares on Oct. 27 and Oct. 28, 2013.
A new research study - jointly written by Lars Backstrom of Facebook and Jon Kleinberg of Cornell University - tries to understand how your relationships pan out figuratively and mathematically. The result is a predictive of the ebb and flow of your relationships.
Scientists have fingerprinted a distinctive atmospheric wave pattern high above the Northern Hemisphere that can foreshadow the emergence of summertime heat waves in the United States more than two weeks in advance.
Wikipedia is the 6th most sued website in the world. A recent report finds that its volunteer workforce is shrinking, threatening the site's ambition to "compile the sum of all human knowledge."