Causes. Fungal nail infections are caused by various fungal organisms (fungi). The most common cause is a type of fungus called dermatophyte. Yeast and molds also can cause nail infections. Fungal nail infection can develop in people at any age, but it's more common in older adults. As the nail ages, it can become brittle and dry.
Photo: Getty Images. Jan. 1 marked a significant cultural shift in China â starting this year, families will be able to have two children. This alters the one-child policy that was introduced in 1978 to control the countryâs population.
Case study: China. Cyclists in Beijing, China. In the late 1970s, the Chinese government introduced a number of measures to reduce the country's birth rate and slow the population growth rate. The most important of the new measures was a one-child policy, which decreed that couples in China could only have one child.1  In 1950 the rate of population change in China was 1.9 per cent each year. 2  Previous Chinese governments had encouraged people to have a lot of children to increase the country's workforce.he most important of the new measures was a one-child policy, which decreed that couples in China could only have one child. 1  In 1950 the rate of population change in China was 1.9 per cent each year. 2  Previous Chinese governments had encouraged people to have a lot of children to increase the country's workforce.