The worst part of being a college student? Pricey learning materials... they make even Ramen noodles a fancy meal. This fall, students at California State University will be at least be able to make a step up to fast food. CSU has announced a three-year deal with Nature Publishing Group for low-cost, interactive, web-based textbooks with access options for disabled students. The first to be offered is an introductory biology text, fittingly titled Principles of Biology. Students on the L.A., Northridge, and Chico campuses will each have varying payment and licensing models, but 49 bucks gets anyone a full edition starting September 1st. Professors can edit the content, which includes 175 "interactive lessons," access to a database of research papers, and assessments for students. It can all be used on any device from a slate to a computer and even printed if you prefer scribing your notes with pen and paper or won't be near an internet connection. Details are dry about future books using the system, but it looks like a promising break for college students. Still, before you get ready to ditch your books and backpack for more money and less backaches.
As you may know, crafting a katana is a delicate process that involves carefully constructing a razor-sharp high-carbon edge around a soft shock-absorbent core. One day though, smiths and forging fires could be replaced by electrode-wielding mad-scientists, with the technology to selectively harden and soften metal at will. At least that's what we envisioned when we read about Jörg Weißmüller's breakthrough research in the field of nanomaterials. The German scientist discovered that by placing precious metals in acid he could create tiny ducts through corrosion. Once those channels are flooded with a conductive liquid, electrical currents can be used to harden the material and, if you change your mind about the brittle results, the effect can easily be reversed to make it soft again. The tech could eventually lead to self-healing vehicle armor or scratch-resistant cellphones -- but, really, we just want to zap our way to a high-quality samurai sword. Physorg
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