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Graphics

Submission + - Carmack speaks on ray tracing, future id engines (pcper.com)

Vigile writes: As a matter of principle, when legendary game programmer John Carmack speaks, the entire industry listens. In a recent interview he comments on a multitude of topics starting with information about Intel, their ray tracing research and upcoming Larrabee GPU. Carmack seems to think that Intel's direction using traditional ray tracing methods is not going to work and instead theorizes that using ray casting to traverse a new data structure he is developing is the best course of action. The "sparse voxel octree" that Carmack discusses would allow for "unique geometry down to the equivalent of the texel across everything." He goes on to discuss other topics like the hardware necessary to efficiently process his new data structure, translation to consoles, multi-GPU PC gaming and even the world of hardware physics.
Space

Submission + - Does Active SETI Put Earth in Danger? 3

Ponca City, We Love You writes: "There is an interesting story in Seed Magazine on active SETI — sending out signals to try to contact other civilizations in nearby star systems. Alexander Zaitsev, Chief Scientist at the Russian Academy of Sciences' Institute of Radio Engineering and Electronics, has access to one of the most powerful radio transmitters on Earth and has already sent several messages to nearby, sun-like stars. But some scientists think that Zaitsev is not only acting out of turn by independently speaking for everyone on the entire planet but believe there are possible dangers we may unleash by announcing ourselves to the unknown darkness. "We're talking about initiating communication with other civilizations, but we know nothing of their goals, capabilities, or intent," says SETI researcher John Billingham. This ground has been explored before in countless works of science fiction most notably "The Killing Star," a 1995 novel that paints a frightening picture of interstellar civilizations exterminating their neighbors with relativistic bombardments, not from malice, but simply because it is the most logical action. Billingham urges a broad, interdisciplinary discussion of Active SETI. "At the very least we ought to talk about it first, and not just SETI people. We have a responsibility to the future well-being and survival of humankind.""
Education

Submission + - OLPC XO Laptop Give 1, Get1 gets extension (tech4educators.org)

jezhills writes: "The One Laptop Per Child (OLPC) program started their "Give One, Get One" campaign two weeks ago, and was scheduled to end November 26 (yesterday); however, the organization has decided to extend their offer for individuals to "buy two and get one" (the other one is given to a child in a developing country) of their innovative XO laptops, sometimes called the $100 laptop. Now the offer will be extended to December 31st"

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