Boys with attention-deficit hyperactivity disorder who take prescribed stimulant medication don't become more likely to abuse drugs than boys who don't receive the medication. (p. 211)

Astronomers, for the first time, have imaged dusty clumps surrounding young stars that could be planets in the making. (p. 211)

Silver Y moths choose to fly when wind blows in the same direction that they migrate, and they may even compensate when the wind pushes them off-course. (p. 212)

Two days of starvation kicks mice's cells into repair mode and helps them endure high doses of chemotherapy. (p. 212)

Researchers have recovered microscopic bits of cellulose from 253-million-year-old salt deposits deep underground. (p. 213)

New evidence suggests that Botox migrates from the injection site, perhaps traveling along nerve cells. (p. 213)

A fatty compound called ceramide that accumulates in lung cells may be instrumental in the devastating disease cystic fibrosis. (p. 214)

A team of biologists places comb jellies, not sponges, at the base of a new tree of animal life. (p. 214)

Diamond can hold quantum information even at room temperature, which makes it a candidate material for future quantum computers. (p. 216)

Human cells grown in conditions that mimic life inside the body are beginning to replace lab animals for testing drug candidates and industrial chemicals. (p. 218)

Relatively high concentrations of atmospheric carbon dioxide weaken soybean defenses against Japanese beetles. (p. 221)

The kinds of microbes living in an infant's gut may influence weight gain later in childhood. (p. 221)

The experimental drug tocilizumab quells rheumatoid arthritis in adults and children by inhibiting an inflammatory compound called interleukin-6. (p. 221)

The Tibetan Plateau formed when the Indian and Eurasian plates collided, but scientists may have had the order of events wrong. (p. 222)

Water softens squid beaks toward their base, so they don't cut into the squid's own soft tissue. (p. 222)

Individual-specific DNA deletions and duplications, many located in genes involved in brain development, occur in an unusually large percentage of people with schizophrenia. (p. 222)

(p. 223)