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Quantum computers are a sort of holy grail of information science. Their inherent computational advantage comes from their fundamental computational unit, the quantum bit ("qubit"). Unlike a digital bit in a classical computer, which can take the form of either 0 or 1, a qubit can be both zero and one simultaneously, throwing open the door to vastly more powerful computation. And although a usable computer based on qubits remains a far-flung fantasy, investigators continue to make strides toward their realization. [More]

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The international commission charged with saving the once abundant bluefin tuna of the Atlantic Ocean and Mediterranean Sea is meeting this week in Morocco to discuss ways to reverse the decline of the dwindling fish. On the watch of the International Commission for the Conservation of Atlantic Tunas, the bluefin population has plummeted as much as 90 percent due to illegal and chronic over-fishing. [More]

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President-elect Barack Obama has tapped former Senate Majority Leader Tom Daschle to be his secretary of health, the Associated Press is reporting. [More]

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The U.S. Environmental Protection Agency (EPA) last week fined electronics recycler Jet Ocean Technology of Chino, Calif., just over $10,000 for illegally exporting cathode-ray tubes from old television sets to China. Jet Ocean is only the second electronics recycler to be penalized for shipping and deliberately mislabeling the tubes, which contain the brain-damaging metal lead. It falsely labeled the cargo as "mixed metal scrap" when it shipped it out--and as "scrap metal" when China (after being warned by Greenpeace of the true contents) refused to accept delivery and returned it. [More]

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You may recall that President George W. Bush pledged to do something about climate change when campaigning for the presidency back in 2000--but reneged on that promise once in office. But it appears that President-elect Barack Obama will not follow suit, telling a gathering of governors yesterday that "few issues facing America--and the world--are more urgent than combating climate change":

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Bye-bye, grease gun. [More]

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New results from an instrument that detects energetic particles in the upper altitudes above Antarctica show an excess of cosmic-ray electrons that may be a signal of dark matter, researchers say. The study, published today by Nature, examines data from a balloon-borne detector called ATIC (Advanced Thin Ionization Calorimeter). The unexpected wealth of electrons in a specific energy range, about 300 to 800 giga-electron-volts, points to a nearby source, the authors write. [More]

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Editor's note: This story will appear in our January issue but is being posted early because of a publication in today's Nature.

Thousands of years after the last woolly mammoth lumbered across the tundra, scientists have sequenced a whopping 50 percent of the beast’s nuclear genome,  they report in a new study. Earlier attempts to sequence the DNA of these icons of the Ice Age produced only tiny quantities of code. The new work marks the first time that so much of the genetic material of an extinct creature has been retrieved. Not only has the feat provided insight into the evolutionary history of mammoths, but it is a step toward realizing the science-fiction dream of being able to resurrect a long-gone animal. [More]

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A 30-year-old Colombian woman with damaged airways is healthy months after receiving what European doctors are reporting is a first-ever, stem-cell-based windpipe transplant. They say the technique has allowed the woman to thrive without the use of the drugs that other transplant patients must take to prevent their immune systems from rejecting the new organs.

The unique transplant was performed in June on Claudia Castillo, who was severely short of breath after part of her trachea had collapsed from tuberculosis, hampering the flow of oxygen to her left lung. Doctors in Barcelona took a trachea from a 51-year-old female donor who’d died of a stroke and, over a six-week “washing,” stripped it of its cells. British doctors then grew stem cells from Castillo’s own bone marrow in the lab and had them grow on the donor trachea with them before implanting it, creating a kind of hybrid windpipe with the donor organ as a scaffold, the doctors write in this week’s edition of The Lancet.

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