Social life

Summer is a great time for health improvement and relaxation. During this period, the number of vacations and movement of the population to places of rest increases: to the sea, to the forest, to other regions and countries of the world.

Diabetics at a healthy weight are more than twice as likely to die from heart disease and other causes as their overweight peers.

The way the pupil dilates can clearly indicate a person's sexual orientation, says Ritch Savin-Williams of Cornell University.

China has become a leading sporting power, with athletes competing in almost every Olympic discipline. But at what cost?