The rapidly-spreading virus has been declared a global health emergency in an effort to fast-track international action and research priorities.

The US has asked <em>Nature</em> and <em>Science</em> to censor data on a lab-made version of bird flu that could spread more easily to humans.

Studies of Borneo orangutans overeating during lush seasons have given scientists a better understanding of obesity in human beings.

Spending 50 minutes with a cellphone plastered to your ear is enough to change brain cell activity in the part of the brain closest to the antenna.

Aggressive drug treatment to lower blood sugar, blood pressure and cholesterol in diabetics does little to prevent heart disease and strokes.

Working with a psychologist to reduce stress can help women whose breast cancer comes back survive longer, US researchers said on Tuesday.