Adam Korbitz writes "A former colleague of Edward Teller — father of the hydrogen bomb — has published a new paper proposing a design for what could be the first practical fusion-powered spacecraft (PDF). As described at Centauri Dreams, the design has certain similarities to MagOrion, a 1990s-era proposal for a nuclear-powered spaceship with a magnetic sail and propelled by small-yield fission devices. The proposal's author also has links to the British Interplanetary Society's Project Daedalus, a 1970s proposal for an unmanned fusion-powered interstellar probe designed to reach 12% of the speed of light on its way to Barnard's Star."

stephencrane writes "Northrop Grumman is making available for sale the FIRESTRIKE weaponized laser system. The solid-state laser unit weighs over 400lbs, sends/receives instructions and data via an RJ-45 jack and can be synchronized with additional units to emit a 100 kW beam. It looks like some piece of stereophonic amplification equipment out of the '50s. Or Fallout 3. The press release suggests that FIRESTRIKE 'will form the backbone of future laser weapon systems.'"

An anonymous reader writes "On the heels of Comcast's decision to implement a 250-GB monthly cap, and Time Warner Cable's exploration of caps and overage fees, DSL Reports notes that AT&T is launching a metered billing trial of their own in Reno, Nevada. According to a filing with the FCC (PDF), AT&T's existing tiers, which range from 768 kbps to 6 Mbps, would see caps ranging from 20 GB to 150 GB per month. Users who exceed those caps would pay an additional $1 per gigabyte, per month."

musicon writes "A group of scientists at Purdue University have created a portable refinery that efficiently converts food, paper, and plastic trash into electricity. The machine, designed for the U.S. military, would allow soldiers in the field to convert waste into power. It could also have widespread civilian applications in the future. Researchers tested the first tactical biorefinery prototype in November and found that it produced approximately 90 percent more energy than it consumed."

Damek writes with news from NASA's Spitzer Space Telescope, which has captured light from what may have been the first glowing objects in the universe, light generated 14 billion years ago. From the article: "'We are pushing our telescopes to the limit and are tantalizingly close to getting a clear picture of the very first collections of objects,' said Dr. Alexander Kashlinsky... 'Whatever these objects are, they are intrinsically incredibly bright and very different from anything in existence today.' Astronomers believe the objects are either the first stars — humongous stars more than 1,000 times the mass of our sun — or voracious black holes that are consuming gas and spilling out tons of energy. If the objects are stars, then the observed clusters might be the first mini-galaxies..."

limbicsystem writes, "I'm a scientist. I like Al Gore. I donate to the Sierra club, I bicycle everywhere and I eat granola. And I just read a very convincing article in the UK Telegraph that makes me think that the 'scientific consensus' on global warming is more than a little shaky. Now IANACS (I am not a climate scientist). And the Telegraph is notoriously reactionary. Can anyone out there go through this piece and tell me why it might be wrong? Because it seems to be solid, well researched, and somewhat damning of a host of authorities (the UN, the editors of Nature, the Canadian Government) who seem to have picked a side in the global warming debate without looking at the evidence." The author of the Telegraph piece is Christopher Monckton, a retired journalist and former policy advisor to Margaret Thatcher.

John Callender writes, "Google engineer Aaron Hopkins has written an interesting analysis of optimizing page load time. Hopkins simulated connections to a web page consisting of many small objects (HTML file, images, external javascript and CSS files, etc.), and looked at how things like browser settings and request size affect perceived performance. Among his findings: For web pages consisting of many small objects, performance often bottlenecks on upload speed, rather than download speed. Also, by spreading static content across four different hostnames, site operators can achieve dramatic improvements in perceived performance."

Gigapixel writes to point us to what is claimed to be the largest digital photo on the Net, at 8.6 Gigapixel. It is a composite photo of the "Parete Gaudenziana," a fresco painted by Gaudenzio Ferrari, dated 1513. This fresco is in the Church of Santa Maria delle Grazie, in the convent of Varallo Sesia, diocese of Novara and Province of Vercelli, Italy. The site uses Flash to let you explore the fresco over a zoom range of more than 180 to 1. The photo is made up of 1145 images, each 12.2 Mpixel and 16 bits per color channel. Read on for more technical specs of the photo.

bblboy54 writes "According to The Washington Post, Blue Security has closed its doors, which can be confirmed by the Blue Security application failing to work today and their domain no longer resolving. Blue Security's CEO is quoted in the article: "It's clear to us that [quitting] would be the only thing to prevent a full-scale cyber-war that we just don't have the authority to start," Reshef said. "Our users never signed up for this kind of thing." You have to wonder where it goes from here. It seems an effective method has been found but more than a small private company could handle. Will someone else adapt this concept, or does the internet world give up?"

galactic_grub writes to tell us that engineers in Portugal have built and flown a plane with no wires or mechanical connections between the major systems, only a wireless network. From the article: "Tests flights carried out in Portugal have shown that the system works well. Cristina Santos, at Minho University in Portugal, who developed the plane, says the aim is primarily to reduce weight and power requirements. 'Also, if you do not have the cables then the system is much more flexible to changes,' she says."