A huge, decade-long study bolsters the link between Epstein-Barr virus and the autoimmune disorder multiple sclerosis by showing that the common infection is more active in people who later develop symptoms of the disease. (p. 4)

Because it uses a permanent magnet, a new, prototype magnetic cooler takes up so little space that it could give rise to ordinary household refrigerators and air conditioners that run on magnetism instead of volatile liquids. (p. 4)

Astronomers are examining some of the brightest objects in the universe to learn about the darkest stuff. (p. 5)

An experimental vaccine designed to repel 10 common bacteria that cause bladder infections has cleared a key hurdle by proving safe and effective in a group of women. (p. 5)

Sediments drilled from the seafloor off Antarctica suggest that the dissolved iron in surface waters that fuels much of the region's biological productivity comes from upwelling deep water currents, not from dust blowing off the continents. (p. 6)

A mistletoe that grows on junipers may do the trees a favor by attracting birds that spread the junipers' seeds. (p. 6)

Cardiac deaths among Chinese and Japanese residents of the United States peak on the fourth day of each month, possibly due to psychological stress from their widespread belief that the number 4 is linked to death. (p. 7)

Astronomers have for the first time caught a dying star at the very beginning of a brief, shining period, when it's known as a planetary nebula. (p. 8)

A spacecraft has begun a 30-month mission in which it will collect samples of the solar wind and bring them back to Earth. (p. 8)

Even a little supplementary folate during pregnancy now appears to reduce the risk that the child will develop acute lymphoblastic leukemia. (p. 8)

A newly uncovered effect of a compound abundant in red wines may provide the mechanism needed to explain how reds could outperform whites and rosés in reducing heart disease. (p. 8)

Garlic supplements interact negatively with a protease inhibitor medication taken by people infected with HIV. (p. 8)

Runoff of the hormones excreted by steroid-treated livestock could subtly harm aquatic life. (p. 10)

Researchers are developing new ways to improve the compatibility of implantable biomaterials in the body. (p. 13)

A new aerodynamic analysis suggests that chaotic turbulence in a high-altitude cloud of volcanic ash can cause small particles of the ash to clump together and fall to the ground much closer to the volcano than expected. (p. 15)

A new study of dust lofted to Antarctica suggests that excess amounts of trace metals coated dust grains long before human industrial activity began loading the atmosphere with pollutants. (p. 15)

The increase of carbon dioxide expected in the coming decades may boost cotton yields up to 26 percent, new models predict. (p. 15)

Scientists using the Global Positioning System to track ground movement along faults in southeastern Alaska have measured something entirely different—the rapid rise of parts of the region due to the recent melting of glaciers. (p. 15)

Current U.S. Air Force operating procedures recommend personnel stop working outdoors when lightning is spotted within 5 nautical miles, but a new analysis suggests that this distance may not be adequate to fully protect aircraft and ground crews. (p. 15)