ryrw writes "I'm planning to spend a year backpacking around the world and the hardest question I have to answer is: What technology do I take with me? Aside from the obvious (digital camera, ipod, et. al.) what technological devices would you you take? Specifically, I wonder if I should bring my nice and shiny MacBook Pro. I can think of lots of uses for it (offloading pix, updating weblog, email, etc.), but I'm worried it will be lost or stolen along the way. Does anyone have experience with travel while toting technology?"

zlite writes "What's the best way to create a UAV for less than $1,000? Use the new Hitechnic gyro sensor for Mindstorms NXT to create a Lego autopilot! This one can turn a R/C plane into a drone, keeping the aircraft level and returning it to the launch area. Add a Bluetooth GPS module and a microcam and you've got a fully autonomous surveillance platform."

TFGeditor asks: "Thanks to the advice of fellow readers from a previous Ask Slashdot, I now have a PC system optimally configured to produce professional on-air radio programs. Now I have a new problem: my radio co-host and I are in different cities located a few hundred miles apart. In order to give the show a real-time (i.e. 'live') sound, we need to somehow connect us so that we can produce a show complete with co-host banter, real-time interaction, and so on. I want it to sound as if we were both in the same studio. How can we do this? Will Skype or other VOIP applications do this without the result sounding 'tinny' (like a phone connection)? Are there other apps that will do a better job?"

Raul654 asks: "A member of my immediate family is a biology teacher at an all-girls high school. For some years, she's been giving her students the option to earn extra credit by reading a science-related book. What scientifically accurate science fiction books would you recommend for high school readers?"

Somnus suggests we check out the latest issue of MIT's Technology Review, where researchers describe how they can dramatically boost engine output and efficiency by preventing pre-ignition, or "knock." How they do it: "Both turbocharging and direct injection are preexisting technologies, and neither looks particularly impressive... by combining them, and augmenting them with a novel way to use a small amount of ethanol, Cohn and his colleagues have created a design that they believe could triple the power of a test engine."

stephe writes "Brent Williams presented 'Open Source Business Models: A Wall Street Look at a Wild 2006 and the Prospects for Even More Fun in 2007' at EclipseCon last Tuesday. Brent is (temporarily) an independent equity research analyst, who moved to Wall Street after 20 years in the software trenches. He starts with a tear-down of the Oracle Linux debate and the Microsoft Novell deal. I especially like his taking apart the commoditization myth and his observations around interface standards versus standards of implementation. He graciously allowed me to post the slides on my blog. They're getting a lot of interest from the open source business crowd, and I thought the Slashdot crowd would want to see them as well. Enjoy."

Forrest Kyle writes "A former professor of climatology at the University of Winnipeg has received multiple death threats for questioning the extent to which human activities are driving global warming. '"Western governments have pumped billions of dollars into careers and institutes and they feel threatened," said the professor. "I can tolerate being called a skeptic because all scientists should be skeptics, but then they started calling us deniers, with all the connotations of the Holocaust. That is an obscenity. It has got really nasty and personal." Richard Lindzen, the professor of Atmospheric Science at Massachusetts Institute of Technology [...] recently claimed: "Scientists who dissent from the alarmism have seen their funds disappear, their work derided, and themselves labelled as industry stooges. Consequently, lies about climate change gain credence even when they fly in the face of the science."'"

An anonymous reader writes to let us know that after two years Seagate is finally shipping its full-disk encryption product, and you can get your hands on it in a laptop from system vendor ASI.

Thelomen writes "Opera Browser contains an Easter egg that is not widely known, recently reported over at OperaWatch.com: type /. in the address bar and you are taken directly to slashdot.org. Other recent news from Opera is their new Speed Dial feature, present in the most recent build from Desktop Team. At first glance Speed Dial just looks like 9 bookmarks you can open with CTRL+1 to CTRL+9. However, the pages on the Speed Dial are shown in thumbnail and are automatically pre-fetched in background — a useful thing if you have some heavy pages among your top bookmarks."

With JavaScript/AJAX being used to place dynamic content in pages, I was wondering how Google indexed web page content that was placed in a page using the JavaScript "document.write" method. I created a page with six unique words in it. Two were in the plain HTML; two were in a script within the page document; and two were in a script that was externally sourced from a different server. The page appeared in the Google index late last night and I just wrote up the results.

A user writes "The Debian project has started a new webpage: the 'Debian package of the day.' It does what it says — every day another package from the Debian repository is posted with an elaborate description and some nice screenshots. As Debian (and all the other distributions as well) contains way too many packages for it to be feasible to inspect all of them yourself, this is then a nice way of learning about all kinds interesting software packages."

cronie writes "Not long ago, SourceForge.net announced the shutdown of the Compile Farm — a collection of computers running a wide variety of OSes, available for compiling and testing open source projects. SF.net stated their resources 'are best used at this time in improving other parts' of the service. I consider this sad news for the OSS community, because portability is one of the strengths of OSS, and not many of us have access to such a variety of platforms to compile and test our software on. As a consequence, I expect many projects dropping support for some of the platforms they can't get access to. Are there any sound alternatives with at least some popular OS/hardware combinations? Any plans to create one? (Perhaps Google or IBM might come up with something?)"

niiler writes "There is finally a usable US federal income tax program for Linux users who don't wish to file online. TaxGeek is a Mozilla-based US income tax program that includes Form 1040, Schedules A, B, C, C-EZ, D, E, K-1 (1065), SE (Short and Long), W2, Forms 8880, 8853, 8863, 8812, 5695, 4952,3903, 2106, 2106ez, 2441 with access to most other files as PDFs. It is intended to be extensible so that developers can easily add other forms that are needed without affecting the existing file formats and stored data. TaxGeek will also create PDFs of all the supported forms so that you can print them and send them in to the IRS. (PDF creation support requires the installation of Perl PDF::Reuse.) At this point, e-filing is not supported."

jpmahala asks: "We had been using Groove internally at our company for quite some time (before the Microsoft buyout), and were interested in adding more users to the program. However, after clicking on the link to the store on Groove's website, I find a message from Microsoft that the product is no longer being offered. Following the link provided by Microsoft, I find that it is bundled into the Office2007 product now and it does not seem to be offered as a standalone product. I'm sad to see that sort of thing happen, and I am unwilling to upgrade everyone to Office2007 just for the sake of Groove. Is there any viable alternative out there?"

Coryoth writes "Design by Contract, writing pre- and post-conditions on functions, seemed like straightforward common sense to me. Such conditions, in the form of executable code, not only provide more exacting API documentation, but also provide a test harness. Having easy to write unit tests, that are automatically integrated into the inheritance hierarchy in OO languages, 'just made sense'. However, despite being available (to varying degrees of completeness) for many languages other than Eiffel, including Java, C++, Perl, Python, Ruby, Ada, and even Haskell and Ocaml, the concept has never gained significant traction, particularly in comparison to unit testing frameworks (which DbC complements nicely), and hype like 'Extreme Programming'. So why did Design by Contract fail to take off?"