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What makes a disease deadly in the twenty-first century? Medicine has never been more advanced; our understanding of spread and infection, never more sophisticated. And yet, we may be poised for the largest and most devastating pandemic the human race has ever encountered.

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Few would begrudge an environmental impact study in advance of new power plant construction, least of all proponents of alternative energy. But with the Bureau of Land Management's recent decision to put a freeze on any new solar projects on the land it oversees in order to study the potential environmental effects, those same proponents are now looking skeptically at the federal government.

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Now that the glitches caused by the Martian soil's clumpy consistency have been shaken out, the Phoenix Lander has been able to cook up a few samples to test the soil composition. The preliminary results are surprising even to the chemists at work on the project: the soil is alkaline, and much more so than anyone expected. The analysis has found trace amounts of magnesium, sodium, potassium, and other elements similar to those in the soil on Earth. On first pass, Martian dirt appears to be non-toxic and laden with the basic nutrients necessary to support life.

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When it launches in 2009, NASA's Kepler Mission will include the most sensitive detection system ever put into service for discovering exosolar planets. In the meantime, our toolkit on Earth is getting better with each passing year. Astronomers using the High Accuracy Radial velocity Planet Searcher (HARPS) at La Silla Observatory in Chile have discovered three new rocky planets orbiting a single star, all within ten times the size of Earth.

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Chimpanzees and humans share many similarities, which isn't surprising considering they're our closest living relatives. A new study in the Proceedings of the National Academy of Sciences this week has added another to the list: third-party consolation. Researchers in England have discovered that chimps will calm each other down after conflicts and that the kissing and embracing help to alleviate the stress caused by the situation. Previous studies had focused on reconciliation between parties in conflict; this new work focuses on bystanders who come in afterward to offer solace.

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The human brain is still largely an unsolved mystery. We only marginally understand how it works and are even less able to predict how it will behave in certain situations. One of the most frustrating of those situations is the coma. Anecdotes abound of people in comas who unexpectedly wake from them, much to their doctors' surprise. But what if doctors could get ahead of that surprise with a predictor of whether or not a patient will regain consciousness? A team of Belgian scientists have proposed just such a clue.

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For as long as humans have looked to the night sky to divine meaning and a place in the universe, we have let our minds wander to thoughts of distant worlds populated by beings unlike ourselves. The ancient Greeks were the first Western thinkers to consider formally the possibility of an infinite universe housing an infinite number of civilizations.

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Although it's only one part of the answer, we have come another step closer to solving the question of how life originated. Two necessary molecular ingredients of DNA and RNA have been confirmed to have originated from outer space. They join the handful of amino acids we have discovered to have been delivered to Earth on the backs of asteroids and comets.

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Pluto took a big hit in the eyes of schoolchildren and amateur astronomers two years ago when the International Astronomical Union (IAU) knocked it out of the rank of planets. Deemed too small and irregularly shaped, and with its orbit in the path of another planet, Pluto was relegated to a new class of "dwarf planets." The reclassification came about as the result of discoveries of bodies beyond Pluto's orbit that are the same size or larger than the icy world. And so Pluto was grouped with those far-out solar-system denizens, along with asteroids close to Pluto's size.

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Using animals to assist with human medical procedures is nothing new. Leeches can help heal skin grafts by restoring circulation in blocked veins and removing pooled blood under new grafts. Maggots will clean a wound by eating only the dead tissue, thereby aiding in preventing infection. Now, an insect commonly known as the kissing bug is being put to work in zoos in Germany and England as a living syringe.

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IBM has broken its own record of computer processing speed by pushing its newest supercomputer past the petaflop barrier. The Roadrunner, a massive machine occupying 6,000 square feet of space, this week achieved a peak of 1.026 petaflops, or just over one million billion calculations per second. Just ten years ago, the fastest supercomputer in the world would have taken 20 years to finish a problem the Roadrunner is capable of finishing in a week.

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The European Union is proceeding more slowly than the Food and Drug Administration did during its investigation into the efficacy and safety of cloned meat and milk. While the United States has already given industry the go-ahead to begin farming the cloned animals, the EU is taking a more measured approach, even with the European Food Safety Authority’s public statement that there is no expectation of additional environmental risks.

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The simplest way to understand hyperbolic space is to think of a lettuce leaf. It’s a two-dimensional surface on which the curvature is bunched up in such a way that it puts a twist on flat Euclidean geometry. For years, mathematicians had a difficult time modeling the space visually until the late 1990s when Daina Taimina, a mathematician at Cornell, discovered that the complex shapes could be reproduced through crochet. Flash forward a handful of years to the day when Margaret Wertheim read about it and began to crochet the shapes herself. Her twin sister Christine soon joined in and before long they realized they had stumbled onto a series of forms they recognized as coral.

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The search for a planet analogous to our own has taken one step closer with the discovery of the smallest extrasolar planet yet orbiting a star which could support life. It is about three and one-third times the size of Earth, much more in line with our home than the gas giants on the scale of Jupiter or Saturn we had been finding up to this point. (An even smaller planet has so far been found, but it is orbiting a pulsar. Pulsars spew highly powerful radiation, so it's highly unlikely that anything within their vicinity could survive).

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