Cracks in buildings that close without external help may seem a little far fetched but we already have a good template in the human body's ability to heal wounds by sending blood platelets to the affected area. In most cases the healing occurs without any need for external coagulants.

The body's natural response to damage was the starting point for the development of self-repairing polymer materials with the ability to recover with minimal external help.

The chemical marks littering the DNA inside our cells have been like trees in front of us - important, but we couldn't see the whole forest so we could study one gene at a time.

New high-throughput DNA sequencing technology has enabled researchers at the Salk Institute for Biological Studies to map the precise position of individual DNA modifications throughout the genome of the plant Arabidopsis thaliana, and chart its effect on the activity of any of Arabidopsis’ roughly 26,000 genes.

The Salk study, which appears today in Cell, paints a detailed picture of a dynamic and ever-changing, yet highly controlled, epigenome, the layer of genetic control beyond the regulation inherent in the sequence of the genes themselves.

Female mice can steer clear of inbred males on the basis of their scent alone, according to evidence in Current Biology.

The researchers found that female mice chose to associate with males producing a greater diversity of major urinary proteins (MUPs), even when all else was held equal. An earlier study by the same team had shown that wild mice also rely on MUPs to recognize and avoid mating with their close relatives.

Inbreeding is often avoided in animals because it can lead faulty, otherwise hidden (or recessive) traits to surface in their offspring. Nevertheless, Thom said, inbreeding does sometimes occur.

The National Health Service (NHS), the British government-run hospital system, has begun adopting a reminder service they say helps reduce missed patient appointments and resulting losses in hospital revenue. Called the Managed Appointment Reminder Service (MARS), the system aims to help NHS Trusts slash an estimated £614 million out of their operating costs each year due to patient no-shows.

The MARS service was developed by Island Communications in association with the NHS and mobile messaging partner Mediaburst, and has been successfully piloted at Hull and East Yorkshire Woman and Children's Hospital(1).

The hospital’s Paediatric Outpatients Unit was the first to test the system.

A group of British investigators headed by H. Walach has studied the psychological mechanisms of 'distant healing', a form of spiritual healing, in patients with chronic fatigue syndrome.

409 patients with chronic fatigue syndrome (CFS) were randomized from 14 private practices for environmental medicine in Germany and Austria in a two by two factorial design to immediate versus deferred (waiting for 6 months) distant healing.

Half the patients were blinded and half knew their treatment allocation. Patients were treated for 6 months and allocated to groups of 3 healers from a pool of 462 healers in 21 European countries with different healing traditions.

In 1750, Denis Diderot convinced his publisher to support a vast enterprise, the publication of the Encyclopédie gathering all knowledge into one location.

Dozens of writers worked on thousands of articles for more than 15 years to produce the first summary of all human knowledge and, despite the labour and pains of its birth, its entire contents would barely fill one volume of a contemporary encyclopaedia.

Linking communities and information into a virtual digital library is the 21st century version of the Dictionaire Raisonneé. Better, they can be organised around specific topics, creating vast repositories and networks of experts around a single problem. Best of all, it can be done on demand.

The biggest blow-up in the science community about Al Gore's "An Inconvenient Truth" was not over the 20 foot ocean rises but the images of Hurricane Katrina and the implication that global warming had a hand in it.

Scientists at the Carnegie Institution say there may be something to it, though indirectly.

The Earth’s jet streams, the high-altitude bands of fast winds that strongly influence the paths of storms and other weather systems, are shifting — it could be argued that is in response to global warming.

Is fairness simply a ruse we adopt only when we see an advantage in it for ourselves? Many psychologists have moved away from this utilitarian view, dismissing it as too simplistic, but recent advances in both cognitive science and neuroscience now allow psychologists to approach this question in some different ways, and they are getting some intriguing results.

UCLA psychologist Golnaz Tabibnia, and colleagues Ajay Satpute and Matthew Lieberman, used a psychological test called the “ultimatum game" to explore fairness and self-interest in the laboratory. In this particular version of the test, Person A has a pot of money, say $23, which they can divide in any way they want with Person B. All Person B can do is look at the offer and accept or reject it; there is no negotiation. If Person B rejects the offer, neither of them gets any money.

Fishing activities can provoke volatile fluctuations in the populations they target, namely by altering the “age pyramid.” Lopping off the few large, older fish that make up the top of the pyramid leaves a broad base of faster-growing small younglings and the research team found that this rapidly growing and transitory base is dynamically unstable — a finding having profound implications for the ecosystem and the fishing industries built upon it.

Imagine a container of water with a 500-pound fish. With food, it grows a little bigger. Without food it gets a bit smaller. Imagine the same container with 500 one-pound fish. They eat, reproduce and the resulting thousands of fish boom, quickly outstripping the resources and the population crashes.

True agoraphobia is an invalidating disease but a paper by Giovanni A. Fava and associates of the University of Bologna, published in Psychotherapy and Psychosomatics, questions the excessive emphasis on panic which has been attributed in the past decade and the role of pharmaceutical industry in this attribution.

In studying the phenomenology of panic attacks, Argyle and Roth noticed that truly spontaneous attacks, not preceded by anxiety-provoking cognitions, were uncommon.

Patients meeting positive criteria for panic disorder suffered from the whole range of anxiety disorders, and a unique relationship with agoraphobia was not seen. Indeed, other diagnoses (particularly social phobia and generalized anxiety disorder) frequently predated the onset of panic. This was true also for agoraphobia.