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Regular exercise seems to reduce anger expression in overweight but otherwise healthy children, researchers say. Aerobic exercise may be an effective strategy to help overweight kids reduce anger expression and aggressive behavior.

Screening for colorectal cancer detects four out of ten cancers and should be carefully designed to be more effective, according to a new study.

Brain researchers have penetrated deeply into the innermost secrets of the brain to find out how brain cells can survive a stroke. Strokes are usually caused by occlusion of one of the blood vessels in the brain. When blood is prevented from supplying vital oxygen and energy to the brain cells, their electrochemical balance is upset, and they cause damage to themselves and to the surrounding brain cells before they collapse and die. Often this affects the memory center, the hippocampus, where the cells are particularly vulnerable.

A new study of backcountry ski habits finds training has little impact on risk of being caught in an avalanche, and Americans have higher avalanche risk than Canadians.

Do laser printers emit pathogenic toner particles into the air? Some people are convinced that they do. As a result, this topic is the subject of public controversy. Researchers have now investigated what particles the printers really do release into the air.

Scientists have identified a gene critical to lung maturation in newborns and the production of surfactant, which lines lung tissues and prevents the lungs from collapsing. Scientists deleted the Foxm1 gene in embryonic mice. Lungs in the mice did not fully mature and the mice died shortly after birth from respiratory distress.

Researchers have discovered one potential mechanism by which briefly cutting off, then restoring, blood flow prior to a heart attack lessens the damage caused. The work could lead to new drugs that provide protection ahead of heart attacks, and may help to prevent damage caused as US heart surgeons temporarily cut off blood flow 450,000 times each year to perform coronary artery bypass graft surgeries.

Researchers have found that several simple steps can significantly improve the quality of facial images that are acquired at border entry points such as airports and seaports.

Researchers urge physicians to test for mutations of the fragile X gene in patients of all ages. That's because, after decades of research, it is clear that mutations in this gene cause a range of diseases, including neurodevelopmental delays and autism in children, infertility in women and neurodegenerative disease in older adults.

Scientists have identified a gene that protects the body from lung cancer. The research has found that the tumour suppressor gene, LIMD1, is responsible for protecting the body from developing lung cancer — paving the way for possible new treatments and early screening techniques.