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The magnitude of circadian advantage influences the outcome of Major League Baseball games in that teams with greater circadian advantage are more likely to win. Crossing multiple time zones further reduces the probability of success for traveling teams.

Scientists have found a mechanism that allows cells starved of iron to shut down energy-making processes that depend on iron and use a less efficient pathway involving glucose. This metabolic reshuffling mechanism, found in yeast cells, helps explain how humans respond to iron deficiency, and may help with diabetes research as well.

British scientists are developing a new type of glass that can dissolve and release calcium into the body. This will enable patients to regrow bones and could signal a move away from bone transplants.

A new inhalable form of gene therapy -- based on technology recognized in the 2006 Nobel medicine prize, shows increasing promise for treating lung cancer, infectious diseases and inflammatory lung disease, scientists have concluded after an exhaustive review of worldwide research on the topic.

Morningness is a predictor of better grades in college. According to the results, college students who are evening types had lower GPAs, while those who are morning types had higher GPAs.

Insufficient sleep among adolescents may not only contribute to lower grades and a lack of motivation, but may also increase the odds of serious levels of emotional and behavioral disturbances, including ADHD.

Because of the way solid tumors adapt the body's machinery to bring themselves more oxygen, chemotherapy and radiation may actually make these tumors stronger.

A single dose of antibiotics can significantly aid healing of the severe tearing that occurs in vaginal tissues during many births, according to researchers. As many as one in five women suffer severe vaginal tears during childbirth. In the study, those who received the antibiotic endured roughly one-third as many infections or other wound-healing complications two weeks after surgical repair of their tears.

Researchers have modified the procedure for islet cell transplantation and achieved insulin independence in diabetes patients with fewer but better-functioning pancreatic islet cells.

Bright light therapy may improve a mother's nocturnal sleep, decrease daytime sleepiness and be beneficial to her well-being.