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Sciencenet - Towards a global search and share engine for all scientific knowledge. We have developed a prototype distributed scientific search engine technology, "Sciencenet", which facilitates rapid searching over this large data space. By "bringing the search engine to the data" we do not require server farms. This platform also allows users to contribute to the search index and publish their large scale data to support e-Science. Furthermore, a community-driven method guarantees that only scientific content is crawled and presented. Our peer-to-peer approach is sufficiently scalable for the science web without performance or capacity tradeoff.

"Einer Verhaltensstudie zufolge können Rabenvögel dem Fressreiz bis zu fünf Minuten widerstehen, wenn sie einen erhaltenen Futter-Brocken nach dieser Wartezeit gegen einen besseren Leckerbissen austauschen dürfen. Derart planvolles und beherrschtes Handeln dokumentiere erneut die enorme Intelligenz dieser Vögel, sagen die Wissenschaftler um Valerie Dufour von der Universität Strasbourg. Bisher war ähnliches Verhalten nur vom Menschen und Menschenaffen bekannt. Andere Tiere können dem unmittelbaren Futterreiz nicht widerstehen und verschlingen einen Leckerbissen sofort. Die schwarz-gefiederten Versuchstiere der Forscher konnten sich dagegen gezielt gedulden: Sie behielten die Futterportion im Schnabel oder legten sie zur Seite, bis sie die Möglichkeit hatten, sie gegen den höherwertigen Leckerbissen einzutauschen. Die Entscheidung zu warten oder das Futter doch sofort zu verspeisen, hing dabei von der Qualität der Belohnung und der erforderlichen Wartezeit ab."

The event horizon telescope will only photograph the proximity to the event horizon, not the black hole itself which by definition remains invisible. If it succeeds it will be the first actual proof that black holes exist.

If this can be confirmed to be correct, then it should also be able to detect changes in the earth's axis that may be a result of an earthquake or series of earthquakes.

"Our Juliets (as parents longing for grandchildren will recognize with a sigh) may experience the tumult of love for 20 years before they settle down into motherhood. And our Romeos may be poetic lunatics under the influence of Queen Mab until they are well into graduate school. What happens when children reach puberty earlier and adulthood later? The answer is: a good deal of teenage weirdness. Fortunately, developmental psychologists and neuroscientists are starting to explain the foundations of that weirdness. Photos: The Trials of Teenagers View Slideshow [SB10001424052970204573704577187080963983566] Everett Collection James Dean in the 1955 film 'Rebel Without A Cause' The crucial new idea is that there are two different neural and psychological systems that interact to turn children into adults"

"Hirnscans, die das Forscherteam während der Betrachtung der Fotos anfertigte, bestätigten diese Ergebnisse, hielten aber auch eine Überraschung parat: „Interessanterweise zeigten die Scans während der Betrachtung positiver Bilder bei Frauen eine höhere Aktivität der rechten Gehirnhälfte, bei Männern dagegen in der linken Gehirnhälfte", berichtet Lavoie. Frühere Studien hatte genau das Gegenteil ergeben: bei Frauen eine höhere Aktivität in der linken Gehirnhälfte, bei Männern in der rechten. „Insgesamt zeigen unsere Ergebnisse, wie komplex die Speicherung emotionaler Erinnerungen ist und unterstreichen, wie wichtig es ist, bei Untersuchungen der Gehirnaktivität die Wertigkeit, Intensität und das Geschlecht mit einzubeziehen""

Warm, moist subsurface environment on Mars. Potential breeding ground for all sorts of things - first visitors will need to be very careful...

A magnificent list of images and videos.

Some argue that these genes bring benefits - mental illness and genius have a long-standing link - but archaeologist Penny Spikins at the University of York, UK, goes further. She believes that mental illness and conditions such as autism persist at such high levels because in the past they were advantageous to humanity. "I think that part of the reason Homo sapiens were so successful is because they were willing to include people with different minds in their society - people with autism or schizophrenia, for example."

"Sogar kurzfristige Störungen im Schlafrhythmus können schon negative Auswirkungen haben, zeigten Studien: Probanden, deren Schlaf in drei Nächten wiederholt gestört wurde, bekamen vorübergehend Symptome von Diabetes. Die Wissenschaftler um Philippe Froguel vom Imperial College in London konnten die Verbindung zwischen Schlafrhythmus und Diabetes nun mit genetischen Studien untermauern: Die Studie belegt die Rolle des Melatonins."

"Leah Pyter: Well basically what we know is that patients with cancer have a higher likelihood of also developing depression at some point in their disease progression, so whether that occurred before and is predisposing them to cancer, or it's due to the tumours themselves, or other aspects of having the disease, we don't know. We were only studying right now whether the cancer itself can cause depression. Chris Smith: How could a tumour trigger depression, because a tumour can occur anywhere in the body, therefore at the remote sites in the brain, so how could it trigger changes in brain activity? Leah Pyter: Sure, well what we hypothesized was that the tumours themselves can produce cytokines which has been shown before. Chris Smith: These are inflammatory chemicals that drive the immune system? Leah Pyter: Right, exactly! And there is also a pile of research on how cytokines can access the brain specifically regions of the brain that are associated with depression and anxiety and emotional behaviours, and they can access the brain both tumourally through the blood, or neurally through the vegas nerves. "