Strictly controlling blood-sugar concentrations in critically ill patients can reduce deaths by a third. (p. 404)

Holiday fireworks and sparklers trigger ozone-generating chemical reactions in the lower atmosphere. (p. 404)

A gender-bent mite—in which altered males give birth as virgins—turns out to be the first species discovered to live and reproduce with only one set of chromosomes. (p. 405)

In a study of college students, high levels of anxiety about taking mathematics tests interfered with memory processes needed to perform difficult arithmetic problems. (p. 405)

Copper and free radicals may initiate the brain damage of Alzheimer's disease long before its hallmark protein plaques have formed. (p. 406)

Newly hatched California condor chicks indicate that reproduction is again taking place in the wild. (p. 406)

Very strict control of blood glucose concentrations helps limit atherosclerosis formation in people with type I, or juvenile-onset, diabetes. (p. 406)

Soldiers, rescue workers, and others may attain superhuman strength, speed, and endurance as a result of a new military program to develop powered robotic exoskeletons contoured to a person's body. (p. 407)

A 39-year study finds three different patterns of healthy psychological development among women, each of which emphasizes particular goals and trade-offs. (p. 410)

A compound called sphingosine-1-phosphate preserves fertility in female mice given radiation treatment. (p. 410)

Vitamin E may ward off osteoporisis—at least in mice. (p. 410)

A glucocorticoid mimic may offer the autoinflammatory effects of steroids with fewer side effects. (p. 410)