background preloader


Facebook Twitter

Congresso Comunicação Ciência SciCom Pt 2015, Lagos (Portugal) Origin of Mysterious Portuguese Mathematical and Geographical Tiles Revealed. The views expressed are those of the author and are not necessarily those of Scientific American.

Origin of Mysterious Portuguese Mathematical and Geographical Tiles Revealed

A few months ago I wrote about some mystifying mathematical and geographic tiles I encountered at the National Tile Museum in Lisbon, Portugal. Their accompanying label gave no clue to who had made them or why. Several readers subsequently wrote to tell me what they knew about these tiles. Thank you to everyone who did so! Bruce Lewenstein (Univ. de Cornell) e a Comunicação de Ciência (2) Bruce Lewenstein (Univ. de Cornell) e a Comunicação de Ciência (1) Untitled. Fundação Calouste Gulbenkian - Agenda. The Shorty Awards - Honoring the best of Twitter and social media. Why Smokers Are Skinny. Craving an afternoon snack?

Why Smokers Are Skinny

Take a drag on a cigarette, and your hunger will likely disappear. Smoking is the number one cause of preventable deaths in the Unites States and other developed countries, causing lung cancer, heart disease, and chronic bronchitis. But smokers are, on average, skinnier than nonsmokers. Scientists Create Tiny Artificial Brain That Exhibits 12 Seconds of Short Term Memory. It's not artificial intelligence in the Turing test sense, but the technicolor ring you see above is actually an artificial microbrain, derived from rat brain cells--just 40 to 60 neurons in total--that is capable of about 12 seconds of short-term memory.

Scientists Create Tiny Artificial Brain That Exhibits 12 Seconds of Short Term Memory

Developed by a team at the University of Pittsburgh, the brain was created in an attempt to artificially nurture a working brain into existence so that researchers could study neural networks and how our brains transmit electrical signals and store data so efficiently. The did so by attaching a layer of proteins to a silicon disk and adding brain cells from embryonic rats that attached themselves to the proteins and grew to connect with one another in the ring seen above. But as if the growing of a tiny, functioning, donut-shaped brain in a petri dish wasn't enough, the team found that when they stimulate the neurons with electricity, the pulse would circulate the microbrain for a full 12 seconds.

That's essentially short-term memory. ‘Lefties’ more gifted ‘a myth’ Jupiter steals Mars mass and populates asteroid belt - National Paelenotology Science News. A paper in the June 5, 2011, journal Nature presents a simulation that explains the small size of Mars relative to the Earth and Venus and the composition of the asteroid belt between Mars and Jupiter. According to the simulation, Jupiter moved toward Mars due to gravitational pull of a dense planet on a newly formed gaseous planet. When Jupiter solidified, it pulled mass away from Mars by the gravitational influence of Saturn when it formed. This produced the present location of Jupiter that is ouside the asteroid belt.

Don't Believe Facebook; You Only Have 150 Friends. Italian Seismologists Charged With Manslaughter for Not Predicting 2009 Quake - April 6, 2009: An aerial photo provided by the Italian Police shows the debris of a collapsed building in an area near L'Aquila, central Italy, after a powerful earthquake shook central Italy.AP Photo/Italian Police Italian government officials have accused the country's top seismologist of manslaughter, after failing to predict a natural disaster that struck Italy in 2009, a massive devastating earthquake that killed 308 people.

Italian Seismologists Charged With Manslaughter for Not Predicting 2009 Quake -

A shocked spokesman for the U.S. US scientists get glimpse of antihelium. They were gone as soon as they appeared, but for a fleeting moment they were the heaviest particles of antimatter a laboratory has seen.

US scientists get glimpse of antihelium

Scientists in the US produced a clutch of antihelium particles, the antimatter equivalents of the helium nucleus, after smashing gold ions together nearly 1bn times at close to the speed of light. The discovery of antihelium at the Relativistic Heavy Ion Collider at Brookhaven national laboratory in New York will aid the search for exotic phenomena in the distant universe, including antimatter versions of stars and even galaxies. Antimatter looks and behaves like normal matter but has one crucial difference: particles of antimatter have an equal and opposite charge to those that make up the world around us. Darwin Discovery Days Salem-Keizer Science Expo. Darwin Discovery Days Salem-Keizer Science Expo. <div class="info"><span class="msg-icon"></span><p> To take full advantage of Flickr, you should use a JavaScript-enabled browser and <a href=" the latest version of the Adobe Flash Player</a>.

Darwin Discovery Days Salem-Keizer Science Expo

</p></div> keyboard shortcuts: ← previous photo → next photo L view in light box F favorite < scroll film strip left > scroll film strip right ? The Hacker War Over WikiLeaks Rages On. Today WikiLeaks founder Julian Assange, wanted in connection with sex-related charges in Sweden, turned himself in to the police in London.

The Hacker War Over WikiLeaks Rages On

And while Assange’s personal troubles escalate, so does the online war over WikiLeaks. Last week came the cyber attack against, which hacker “Jester” claimed to have organized. On his blog, Jester describes himself as a”hacktivist for good” and someone who is “obstructing the lines of communication for terrorists, sympathizers, fixers, facilitators, oppressive regimes and other general bad guys.” [Los Angeles Times] That disrupted the site’s operation and left WikiLeaks scrambling. EU to invest €6.4 billion in research. BRUSSELS - Research organisations, universities and industry, will receive a sum of €6.4 billion next year in the European Commission's largest ever allocation for research and innovation.

EU to invest €6.4 billion in research

Research in the EU will receive a 12 percent increase in funding (Photo: Notat) Research commissioner Máire Geoghegan-Quinn said on Monday (19 July) when presenting the plan that around 16,000 participants, including about 3,000 small and medium businesses, will receive funding. "The investment I am announcing today will create 165,000 jobs over the relatively short term and potentially many many more over the long term," the commissioner told reporters.

The sum represents a 12 percent increase on the €5.7 billion that will have been handed out in 2010. Primordial Sperm Gene Found. A gene involved in the production of sperm is shared by almost all living animals, including sea anemones, worms, insects, marine invertebrates, fish and humans.

Primordial Sperm Gene Found

The finding suggests the ability to produce sperm arose just once, 600 million years ago, and has been conserved through all subsequent animal evolution. “People have thought that there was a single common ancestor because we see sperm reproduction in many animals, but previously there was no conclusive evidence that sperm production has a single common origin in all animals,” said geneticist Eugene Xu from Northwestern University, co-author of the study being published July 15 in PLoS Genetics.

Renee Reijo Pera, director of stem cell research at Stanford University, said the result is interesting because sperm cells have so much in common, but also need to be different enough to be specific to each species. “If a human could produce an egg that could be fertilized by a monkey it would be really bad,” she said. What should social software for science lo. Why is the news media comfortable with lying about science? The year is only a couple of weeks old, but it's already been a strange one for science news.

With a steady flow of coverage on a huge range of complex subjects, it's easy for things to go wrong, and for journalists to come up with material that doesn't get the science right. But a few recent cases appear to involve news organizations that have gone out of their way to get a science story wrong. The news industry tends to respond badly to cases where people make up the contents of their stories—witness Jayson Blair and the fake Bush National Guard records. G1 > Ciência e Saúde - NOTÍCIAS - Veja imagens premiadas em conc. CU Team Discovers Tiny RNA Molecule With Big Implications for th. An extremely small RNA molecule created by a University of Colorado at Boulder team can catalyze a key reaction needed to synthesize proteins, the building blocks of life.

CU Team Discovers Tiny RNA Molecule With Big Implications for th

The findings could be a substantial step toward understanding "the very origin of Earthly life," the lead researcher contends. The smallest RNA enzyme ever known to perform a cellular chemical reaction is described in a paper published this week in the Proceedings of the National Academy of Sciences. The paper was written by CU graduate student Rebecca Turk, research associate Nataliya Chumachenko and Professor Michael Yarus of the molecular, cellular and developmental biology department. Cellular RNA can have hundreds or thousands of its basic structural units, called nucleotides. Yarus' team focused on a ribozyme -- a form of RNA that can catalyze chemical reactions -- with only five nucleotides. BBC - Earth News - Ants are first animal known to navigate by st. An artist's impression of how an ant may sense smell, creating an odour map Desert ants in Tunisia smell in stereo, sensing odours from two different directions at the same time.

By sniffing the air with each antenna, the ants form a mental 'odour map' of their surroundings. They then use this map to find their way home, say scientists who report the discovery in the journal Animal Behaviour. Pigeons, rats and even people may also smell in stereo, but ants are the first animal known to use it for navigation. Dr Markus Knaden and colleagues Dr Kathrin Steck and Professor Bill Hansson of the Max-Planck Institute for Chemical Ecology in Jena, Germany investigated how the desert ant Cataglyphis fortis navigates around its surroundings. Fish See Their Enemies’ Faces in Ultraviolet. The problem with science journalism… : Pharyngula. Breezy Love, or the Sacking of the Bees - Opinionator Blog - NYT.

Mystery of Half-Male Chickens Solved. Some chickens have sexual-identity issues, waddling around with half-male and half-female plumage. Now researchers have figured out the cause of the gender-confusing traits: Half of their bodies are full of female sex cells, while the other half contains mostly male cells. "This research has completely overturned what we previously thought about how sexual characteristics were determined in birds," said study researcher Michael Clinton of the University of Edinburgh, Roslin, in Scotland. "We now believe that the major factors determining sexual development are built into male and female cells and derive from basic differences in how sex chromosome genes are expressed. " The findings are detailed this week in the journal Nature. Previously, scientists thought whether an animal became male or female occurred during embryo development when genetic and other factors instructed gonads to become ovaries or testes.

Sexual identity Female and male cells. Lenin's Embalmers - The Scientist - Magazine of the Life Science. Variations on dividing circular area into equal parts. U.S. stem cell expert is hottest researcher. By Maggie Fox, Health and Science Editor WASHINGTON Mon Mar 15, 2010 3:34pm EDT WASHINGTON (Reuters) - Rudolf Jaenisch, whose stem cell lab at the Massachusetts Institute of Technology has consistently broken new barriers in the field, is the world's "hottest" researcher, according to a survey by Thomson Reuters. The annual hot list from Thomson Reuters' Science Watch also names four genome experts at MIT and Harvard University's Broad Institute -- Mark Daly, David Altshuler, and Paul I.W. de Bakker and Eric Lander. Smoking, but not past alcohol abuse, may impair mental function. Public release date: 16-Mar-2010 [ Print | E-mail. Childhood Adversity May Promote Cellular Aging.

How plants put down roots. Copernicus Invented Geology, Study Claims. Robot folds towel, but does it do windows? - Science Fair: Scien. In the long run, all that ash can be a good thing - Los Angeles. Radiation-soaking metamaterial puts black in the shade - tech -