Students learn in microeconomics that the demand curve for a good, which shows the relationship between the price of a good and the quantity of the good that consumers demand-i.e. are willing, ready, and able to purchase-has a negative slope.
The UNICEF estimates that an average of 353,000 babies are born each day around the world. The crude birth rate is 18.9 births per 1,000 population or 255 births globally per minute or 4.3 births every second (as of Dec. 2013 estimate).
There are approximately 360,000 babies born per day and 15,000 births per hour worldwide. That is more than twice the number of people who die each day. Just under half of the world's total population is comprised of children 18 and under. The average life expectancy worldwide for new babies born each year is 67.