Seismic activity that rattled the Indonesian region early this week, including a quake that measured a whopping magnitude 8.7, was triggered by December's massive tsunami-spawning earthquake, scientists suggest. (p. 211)

A promising new type of fuel cell exploits microstreams of water, which behave like flows of gooey honey. (p. 211)

Hormone injections used to induce livestock and women to ovulate could force eggs to leave ovarian follicles before they are fully mature and thereby jeopardize pregnancy outcomes. (p. 211)

Marine parasites known as sea lice spread readily from farmed salmon to passing wild fish, according to a controversial study conducted in British Columbia. (p. 212)

Researchers have devised a way to pinpoint leaks in spacecraft by listening to ultrasound waves traveling through the ship's hull. (p. 212)

Even though a honeybee's brain could fit on the head of a match, the creature's working memory is nearly as effective as that of a pigeon or a monkey. (p. 213)

Astronomers have detected the most massive and densest cluster of young stars ever detected in the Milky Way, a finding that could shed light on how stars formed in the early universe. (p. 213)

Scientists have discerned the chemistry underlying the rapid wound-healing process in an invasive green alga that is wreaking havoc in the Mediterranean Sea. (p. 214)

New research indicates that diet and lifestyle can affect the body's production of a hunger hormone in ways that might unwittingly foster overeating. (p. 216)

Before stem cells can fulfill the promise of treating deadly diseases, problems with the cells' biology and government regulations limiting their use must be solved. (p. 218)

A new study shows how the classic idea of kin selection could explain why male turkeys cruise in pairs, even though only one of them will win a mate. (p. 221)

Astronomers have discovered the smallest star known. (p. 221)

New topographic data have enabled scientists to estimate the volume of water trapped in the ice caps and glaciers outside of Antarctica and Greenland and to predict how high the sea level would rise if this ice melted. (p. 221)

A Mars rover has discovered a patch of soil that's the saltiest place known on the Red Planet, an indication that water once coursed through the region. (p. 221)

Biomedical engineers have developed polymer molecules that bind to and block the activity of proteins associated with Alzheimer's disease. (p. 222)

Treating wool with a fungal enzyme not only prevents the fibers from shrinking but also is more environmentally friendly than using conventional chemical treatments. (p. 222)

Analytical chemists have developed a method that visualizes elusive fingerprints with X rays. (p. 222)

In an effort to explore the mechanisms of evolution, researchers have designed an unnatural chemical base and inserted it into synthetic DNA in a test tube. (p. 222)

(p. 223)