Prisoners at a maximum security facility in the U.S. are guaranteed 2 hours of outdoor time daily, whereas 1 out of 2 kids worldwide spends less than an hour outside. Children spend less time outside each day than prison inmates do in the United States. Inmates are guaranteed two hours of outdoor time daily, whereas one in two children is outside for less than an hour. A recent survey of 12,000 parents in 10 countries, who have children aged five to 12, found that one-third of kids spend under 30 minutes outside each day.
The prostaglandins (PG) are a group of physiologically active lipid compounds having diverse hormone-like effects in animals. Prostaglandins have been found in almost every tissue in humans and other animals. They are derived enzymatically from fatty acids. Every prostaglandin contains 20 carbon atoms, including a 5-carbon ring. They are a subclass of eicosanoids and of the prostanoid class of fatty acid derivatives.
Print | Email article to a friend | Last updated: October 24, 2013. The prostaglandins are a group of lipids made at sites of tissue damage or infection that are involved in dealing with injury and illness. They control processes such as inflammation, blood flow, the formation of blood clots and the induction of labour.