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The US Navy has fired a laser gun from one of its ships for the first time. Researchers used the high-energy laser (HEL) to disable a boat by setting fire to its engines off the coast of California.

On DVICE and other tech blogs, we're all always speculating which robot will emerge as the first real automated servant. According to Apple co-founder Steve Wozniak, maybe we've got that backwards - maybe it's the robots who will have human pets.

More than 50 severely disabled people in Second Life have been trying out a sophisticated new brain-computer interface (BCI) that lets users freely explore Second Life's virtual world and control their real-world environment. The system was developed by medical engineering company G.Tec of Schiedlberg, Austria as part of a pan-European project called Smart Homes for All. It's the first time the latest BCI technology has been combined with smart-home technology and online gaming. To activate a command, the user focuses their attention on the corresponding icon on a screen. Electroencephalograph (EEG) caps pick up brain signals, which are translated into commands to navigate and communicate within Second Life and Twitter. It can also be used to open and close doors, answer the phone, and control the TV, lights, thermostat, and intercom. G.Tec's system has been tested at the Santa Lucia Foundation Hospital in Rome, Italy.

Researchers from Purdue University and colleagues are developing new technologies that combine a laser and electric fields to manipulate fluids and tiny particles such as bacteria, viruses, and DNA molecules for a wide range of potential applications, including medical diagnostics, testing food and water, crime-scene forensics, and pharmaceutical manufacturing.. This "hybrid optoelectric manipulation in microfluidics" technology could allow for innovative sensors and analytical devices for "lab-on-a-chip" applications, or miniature instruments that perform measurements normally requiring large laboratory equipment, the researchers said. The technology works by first using a red laser to position a droplet on a platform specially fabricated at Purdue. Next, a highly focused infrared laser is used to heat the droplets, and then electric fields cause the heated liquid to circulate in a "microfluidic vortex." This vortex is used to isolate specific types of particles in the circulating liquid, like a micro centrifuge. Particle concentrations replicate the size, location and shape of the infrared laser pattern. The technology can also be used in nanomanufacturing because it shows promise for the assembly of suspended particles (colloids), the researchers said. Ref.: Steven T. Wereley, et al., Hybrid opto-electric manipulation in microfluidics-opportunities and challenges, Lab on a Chip, 2011; 11 (13): 2135 [DOI: 10.1039/C1LC20208A]

Vera Gorbunova and Andrei Seluanov of the University of Rochester have found that human cells undergoing oxidative stress caused by environmental chemicals or routine cellular processes produce a protein (SIRT6) that stimulates cells to repair DNA double-strand breaks, thought to be associated with premature aging and cancer. The team first measured levels of SIRT6 in stressed cells, then treated a second group of stressed cells with a drug that deactivates the protein. DNA repair in the second group stopped, confirming SIRT6′s role.  The team also found that SIRT6 acts in concert with another protein, called PARP1, to make the repairs. Furthermore, the team found that increased levels of SIRT6 lead to faster DNA repair. They suspect that the protein acts as a "master regulator," coordinating stress and DNA repair activities. Ref.: Zhiyong Mao, Christopher Hine, Xiao Tian, Michael Van Meter, Matthew Au, Amita Vaidya, Andrei Seluanov, and Vera Gorbunova. SIRT6 Promotes DNA Repair Under Stress by Activating PARP1. Science 17 June 2011: 1443-1446. [DOI:10.1126/science.1202723]

A University of Zurich study 'proves' that a small group of companies - mainly banks - wields huge power over the global economy. The study is the first to look at all 43,060 transnational corporations and the web of ownership between them - and created a 'map' of 1,318 companies at the heart of the global economy. The study found that 147 companies formed a 'super entity' within this, controlling 40 per cent of its  wealth. All own part or all of one another. Most are banks - the top 20 includes Barclays and Goldman Sachs. But the close connections mean that the network could be vulnerable to collapse

Unification theory with no extra dimensions. The first part unifies the strong nuclear force with the gravitational force in a mathematical way; the quantum vacuum is treated as a deformable system by the strong nuclear force. The second part unifies the nuclear force with the quantum vacuum in a hypothetical structure; the quantum vacuum is treated as a supersymmetric and metastable system with properties related to the different types of particles' motion.

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Our hard drives are divided into small sections of memory called sectors. Boot sector is the first sector containing Master Boot Records (MBR), which is responsible to boot up the operating system from system files.

The concept of artificial intelligence clouds our view of the world.

short summary of some probabilistic responses to the problem of induction

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