A new tool cools asthma by heating lung tissue to kill overgrown smooth muscle in airways, a hallmark of the disease. (p. 195)

A wispy dwarf galaxy called Leo A has the potential to change the way astronomers build theoretical models of galaxy evolution. (p. 195)

A gene in mice that benefits the father at the mother's expense appears to help offspring of both sexes. (p. 196)

Severe depression in patients with bipolar disorder responds no better to a combination of antidepressants and mood-stabilizing drugs than to mood stabilizers alone. (p. 196)

A shortage of big sharks on the U.S. East Coast is letting their prey flourish, and that prey is going hog wild, demolishing bay scallop populations. (p. 197)

A new type of fuel cell uses natural enzymes to produce small amounts of electricity from sugar. (p. 197)

Pollutant exposures in rodents can have behavioral repercussions that persist generation after generation. (p. 198)

Some of the most devoted parents in the animal kingdom routinely devour some of their own children. (p. 200)

New data identify some factors that influence the highly variable flow rates of ice streams, the megaglaciers that carry most of Antarctica's ice to the sea. (p. 202)

(p. 205)

An obscure family of plants long thought to be relatives of grasses turns out to represent one of the most ancient surviving lineages of flowering plants. (p. 205)

Amoebas seem to possess a rudimentary form of memory that keeps them from walking around in circles. (p. 205)

A New York University mathematician has won one of the highest prizes in mathematics for figuring out the likelihood of unlikely events. (p. 205)

If all the frozen water stored near the south pole of Mars suddenly melted, it would make a planetwide ocean 11 meters deep. (p. 206)

Among mammals, reptiles, and related animals, today's birds have the smallest genomes, and the dinosaurs that gave rise to birds had small genomes as well. (p. 206)

Violations of Newtonian physics could explain away dark matter. (p. 206)

Stagnant funding for the National Institutes of Health is forcing scientists to downsize their labs and abandon some of their most promising work. (p. 206)

(p. 207)