New Scientist has an interesting piece up about the calculable energy costs per mile for various forms of transportation. Despite the headline ("Train can be worse for climate than plane"), the study it describes deals with highway-based vehicles, too: the authors attempted to integrate not just the cost at the tailpipe (or equivalent) for each mode of transport, but also the costs of developing and supporting the associated infrastructure, such as rails, highways and airports. Such comparisons are tricky, though; a few years back, a widely circulated report claimed that the Toyota Prius had a higher per-mile lifetime cost than the Hummer (see that earlier Slashdot post for good reason to be skeptical of the methodology and conclusions). I wonder how the present comparison would be affected by a calculation of (for instance) how much it would cost to move by plane the freight currently carried by trains.

Al writes "A startup based in Toledo, Ohio, has developed a way to make large, flexible solar panels using a roll-to-roll manufacturing technique. Thin-film amorphous silicon solar cells are formed on thin sheets of stainless steel, and each solar module is about one meter wide and five-and-a-half meters long. Conventional silicon solar panels are bulky and rigid, but these lightweight, flexible sheets could easily be integrated into roofs and building facades."

DAMN MY LIFE writes "I'm going to Central Michigan University in the fall. Upon examination of their poorly organized network usage policies, I'm worried that using their internet service will expose my web browsing habits, emails, and most importantly, passwords. Another concern I have is the 'Client Security Agent' that students are required to install and leave on their systems to use the network. Through this application, the IT department scans everyone's computer for what they claim are network security purposes. Of course, scanning a person's hard drive can turn up all kinds of things that are personal. Do all colleges have such extreme measures in place? Is there any way that I can avoid this? There are no wireless broadband providers available in the area, I already checked."

Despite all the announcements for popular, big-budget game franchises at this year's E3, one of the most talked-about titles is a puzzle game for the Nintendo DS called Scribblenauts. In a hands-on preview, Joystiq described it thus: "The premise of the game is simple — you play as Maxwell, who must solve various puzzles to obtain Starites spread across 220 different levels. To execute the aforementioned solving, you write words to create objects in the world that your cartoonish hero can interact with. It's a simple concept that's bolstered by one astounding accomplishment from developer 5th Cell: Anything you can think of is in this game. (Yes, that. Yes, that too.)" They even presented it with a test of 10 words they wouldn't expect it to know or be able to represent, including lutefisk, stanchion, air, and internet, and the game passed with flying colors. The game will also allow players to edit and share levels. A trailer is available on the Scribblenauts website, and actual gameplay footage is posted at Nintendorks.

Maingear has just unveiled what they are calling the "planet's greenest gaming PC." Built using a small form factor and coming with Intel's new Ion graphics as the default option, this little powerhouse is built with a definite eye toward energy consumption. "Said configuration is available with Intel Core 2 Duo CPUs and an 80+ certified 300-watt power supply; those who care more about frame rates than Ma Earth can opt for a GeForce 9800 GT ECO, which — despite being a discrete, power-hungry GPU — still swallows some 40 percent less power than a standard 9800 GT. You'll also find WiFi support, room for an optional Blu-ray drive and TV tuner, upwards of 8GB of RAM and room for a single 2.5-inch HDD or SSD. The whole box checks in at just 7.6- x 8.3- x 11.4-inches, and it's available for order right now starting at $799."

Michael_Curator writes "Gary Edwards, president of the now-defunct Open Document Foundation, helps sort out the challenges Google faces displacing Microsoft on the desktop, pitting the strengths of Microsoft's proprietary stack against the developer candy that HTML 5 represents."

sgt scrub writes "I've never thought about sniffing my CDs before buying them but that is all about to change. According to this Yahoo! news article, dogs can be trained to tell the difference between a legit copy of a DVD and one from those pesky pirates. From the article, 'A DVD-sniffing anti-piracy dog named Paddy has uncovered a huge cache of 35,000 discs in Malaysian warehouses, many destined for export to Singapore, industry officials said on Wednesday. Paddy was given to Malaysia by the MPA to help close down piracy syndicates, which churn out vast quantities of illegal DVDs. The dog is specially trained to detect chemicals in the discs.'" We ran a story about anti-piracy dogs being trained in Ireland a few years ago.

An anonymous reader writes "I work at a small but growing startup company. Currently, our directory and authentication information is scattered across many systems and wikis, and is becoming increasingly difficult to manage. We are looking at centralizing this information in a directory service to minimize administrative overhead as we continue to grow. The service must support basic directory searches, as well as user authentication for Linux and Windows hosts. Although we are primarily a Linux shop, there are a handful of Windows systems that will be on a Windows Active Directory domain. Most directory servers seem to support integration with other directory servers, however it seems like it may be easiest to just use Active Directory for everything. Are there any pitfalls with this approach? If you had the chance to redesign your enterprise directory service without regard for legacy services, how would you do it?"

CNETNate writes "Dial-up connections and flaky Wi-Fi are made significantly more tolerable with Opera 10, it seems. After yesterdays news that Opera 10's first beta had landed, some testing was in order. One major new feature is Opera Turbo — server-side compression — which shrinks pages before sending them down your browser. With a 100Mbps connection throttled to a laughable 50Kbps, Opera 10 proved itself to outperform every other desktop browser on the planet, and there are graphs to prove it. Javascript benchmarks put the new browser in fourth place overall, after Chrome 2, Safari 4 and Firefox, but it indeed passes the Acid3 test with a perfect score. If you ever use a laptop on public Wi-Fi, to not have Opera 10 installed could be a big mistake"

Nevo writes "A partner and I are in the planning stages of a business. We've decided on a name that we'd like to use but the domain name is already registered. The owner has a single 'search' page up (similar to the one at www.goggle.com)... clearly not a legitimate business interest, but since we don't own a trademark on this name it doesn't qualify as bad faith, I don't think. Does anyone have any experience buying domains from these operators? Do you have any advice on how to approach the owners of these domains to get them at a reasonable cost?"

1sockchuck writes "After shaking up the market for blade servers, Cisco Systems is launching a line of rackmount servers. But the company says its ambitions are more targeted than a full-scale 'all your racks are belong to us' assault on the volume server market. Cisco says it sees its 1U and 2U C-Series rackmount servers as offering an entry point to its Unified Computing System vision for companies who've built their data centers using rackmount servers instead of blades. But it thinks many customers will like the expanded memory capacity Cisco has built into the Xeon 5500/Nehalem EP processor."

smurphmeister writes "My wife and I recently moved up to the world of cell phones, after taking our sweet time to make sure this whole newfangled technology was going to stick around. We moved the old landline phone number to her phone, so we're disconnected from the pole. Now the question is, what to do with the copper already in our house? My first thought was an intercom system, but that just seems so old school! So what ideas do you all have for what to do with the 4 little wires running to every room of my house?"

bmerr71 writes "I bought my own domain name to use as a self-promotion tool. I use a subdomain, 'profile.mydomain.com', which I selectively put on my email signatures to link to my linkedin profile. I also loaded up Google Apps to use for email. But when you go directly to my domain name, there is nothing there. I didn't want GoDaddy getting ad revenue off my name (and it doesn't look very professional), so I killed the ad page, but it seems like I should be able to put something up on my main page. But, I am not interesting in blogging, I do not want too much personal information up there, and I do not want to spend a lot of money (none, if possible). Are there any free apps that I can load up on my domain to fill the blank space? What do non-bloggers do with their personal domains?"

mbone writes "In the New York Times, there is an interesting story about a hydraulic analog computer from 1949 used to model the feedback loops in the economy. According to the article, 'copies of the 'Moniac,' as it became known in the United States, were built and sold to Harvard, Cambridge, Oxford, Ford Motor Company and the Central Bank of Guatemala, among others.' There is a cool video of the computer in operation at Cambridge University. I remember that the Instrumentation Lab at MIT still had an analog computer in its computer center in the mid-1970s. Even then, it seemed archaic, and now this form of computation is largely forgotten. With 14 machines built, it must have been one of the more successful analog computers — a supercomputer of its day. Of course, you have to wonder if it could have been used to predict our current economic difficulties."

x4000 writes "My recent RTS game uses a new style of AI that hybridizes rules-based AI with emergent AI logic. As a disclaimer, I'm really not an AI programmer at all — my background is in databases, financial modeling, etc. But it just so happens that database experience, which often involved distilling data points from multiple sources and then combining them into suggested decisions for executives, also makes a great foundation for certain styles of AI. The approach I came up with leans heavily on my database background, and what concepts I am familiar with from reading a bit about AI theory (emergent behavior, fuzzy logic, etc). The results are startlingly good. Total development time on the AI was less than 3 months, and its use of tactics is some of the best in the RTS genre. I'm very open to talking about anything and everything to do with the design I used, as I think it's a viable new approach to AI to explore in games, and I'd like to see other developers potentially carry it even further."