Scientists have deciphered the DNA of the parasites responsible for African sleeping sickness, Chagas' disease, and leishmaniasis. (p. 35)

A gene called Reprimo is shut down in several cancers but rarely in healthy cells. (p. 35)

Adult neural stem cells protect the brain against repeated episodes of inflammation in disorders such as multiple sclerosis by killing inflammatory immune cells. (p. 36)

There's more than enough wind power to satisfy the United States' energy requirements, a new analysis of weather data suggests. (p. 36)

When seabirds go out looking for food, they can bring home traces of pollutants that build up around their nesting colonies. (p. 36)

In a laboratory setting, volunteers breathing pollutants generated by sources such as vehicle engines experience slight but steady increases in blood pressure. (p. 37)

A novel time machine concept may avoid a problem of earlier, less-practical proposals by requiring only normal matter and the vacuum known to exist in space. (p. 38)

Three suns grace the skies above a newly found, Jupiterlike extrasolar planet, posing a puzzle for how massive planets form in a closely-knit, multiple-star system. (p. 38)

A new U.S. postage stamp honoring physicist and folk hero Richard P. Feynman sports curious squiggles, invented by Feynman, that were rejected at first but soon became a major tool of physicists everywhere for picturing the behaviors and calculating the properties of matter and energy. (p. 40)

Energy-efficient, semiconductor-based chips called light-emitting diodes will begin to illuminate homes and offices within the next decade, displacing power-hungry incandescent and fluorescent lighting. (p. 43)

New research suggests that several species of Geobacter bacteria use hairlike structures known as pili to move electrons. (p. 45)

Stem cells in heart tissue that has survived a heart attack can be prodded to regenerate dead portions of the injured organ. (p. 45)

Two new vaccines protect against the lethal Ebola and Marburg viruses, tests in monkeys show. (p. 45)

Researchers off the coast of California have captured three deep-water siphonophores, relatives of jellyfish, and observed in the lab that the creatures twitch little red lights that could be lures for fish. (p. 46)

Hypnotic suggestions to perceive written words as gibberish depress activity in brain areas responsible for vision, possibly reflecting a hypnosis-induced decline in attention paid to visual objects. (p. 46)

Minuscule gaps of controlled sizes in gold microwires may serve as test sites for probing properties of specks of material as small as a single molecule and as a basis for novel sensors and circuit components. (p. 46)

(p. 47)