A new image from NASA's Spitzer and Hubble Space Telescopes looks more like an abstract painting than a cosmic snapshot. The masterpiece shows the Orion nebula in an explosion of infrared, ultraviolet, and visible-light colors. It was "painted" by hundreds of baby stars on a canvas of gas and dust, with intense ultraviolet light and strong stellar winds as brushes.

At the heart of the artwork is a set of four monstrously massive stars, collectively called the Trapezium. These behemoths are approximately 100,000 times brighter than our sun. Their community can be identified as the yellow smudge near the center of the composite.

The swirls of green were revealed by Hubble's ultraviolet and visible-light detectors. They are hydrogen and sulfur gases heated by intense ultraviolet radiation from the Trapezium's stars.

Wisps of red and orange detected by Spitzer indicate infrared light from illuminated clouds containing carbon-rich molecules called polycyclic aromatic hydrocarbons. On Earth, polycyclic aromatic hydrocarbons are found on burnt toast and in automobile exhaust.

Additional stars in Orion are sprinkled throughout the image in a rainbow of colors. Spitzer exposed infant stars deeply embedded in a cocoon of dust and gas (orange-yellow dots). Hubble found less embedded stars (specks of green) and stars in the foreground (blue). Stellar winds from clusters of newborn stars scattered throughout the cloud etched all the well-defined ridges and cavities.

Located nearly 1,500 light-years away from Earth, the Orion nebula is the brightest spot in the sword of the hunter constellation. The cosmic cloud is also our closest massive star-formation factory, and astronomers suspect that it contains about 1,000 young stars.

The Orion constellation can be seen in the fall and winter night skies from northern latitudes. The constellation's nebula is invisible to the unaided eye, but can be resolved with binoculars or small telescopes.

This image is a false-color composite, in which light detected at wavelengths of 0.43, 0.50, and 0.53 microns is blue. Light with wavelengths of 0.6, 0.65, and 0.91 microns is green. Light of 3.6 microns is orange, and 8-micron light is red.

How can people and computers be connected so that—collectively—they act more intelligently than any individuals, groups, or computers have ever done before?

How can large groups of people produce high quality written documents? For instance, how can the lessons of Wikipedia be applied to other groups and other kinds of documents? What kinds of technologies and motivational structures are needed?

How can groups of people make accurate predictions of future events? For instance, in prediction markets, people buy and sell predictions about uncertain future events, and the prices that emerge in these markets are often better predictors than opinion polls or individual experts. When and how do these prediction markets work best? How can they be combined with simulations, neural nets, and other techniques?

How can we harness the intelligence of thousands of people around the world to help solve the problems of global climate change? For instance, how can we use innovative combinations of computer-based simulations and explicit representation of argumentation to help people identify and analyze different policy alternatives?

How can we create an on-line, searchable library of books from many languages and historical eras? For instance, how can we harness a combination of human and machine intelligence to recognize the images of words in these books?

How can we help create commercially sustainable products and services for low-income communities around the world? For instance, how can we use cutting-edge technology to help a world-wide network of entrepreneurs and investors rapidly find, analyze, and replicate successful projects?

An international team of scientists reported Thursday that rising temperatures are steadily transforming the Arctic -- warming millions of square miles of permafrost, promoting lush greenery on previously arid tundras and steadily shrinking the annual sea ice.

Yet the researchers also found new patterns of cooling ocean currents and prevailing winds that suggested the Arctic, long considered a bellwether of global warming, may be reverting in some ways to more normal conditions not seen since the 1970s.

Taken together, these findings may be evidence, the researchers said, of the region struggling to keep its balance, as rising temperatures slowly overturn the long-established order of seasonal variations.

"This is a region that is fighting back," said lead author Jacqueline Richter-Menge, a civil engineer at the Cold Regions Research and Engineering Laboratory in Hanover, N.H. "There are things that showed signs of going back to norms, trying to right themselves under very dire circumstances."...