In 2015, for example, scientists said that an ongoing drought in Californiaâthe stateâs worst water shortage in 1,200 yearsâhad been intensified by 15 percent to 20 percent by global warming. They also said the odds of similar droughts happening in the future had roughly doubled over the past century.
Definition: Birth rate is the demographic measure of the rate at which children are born. The most well known is the crude birth rate, which is the number of births that occur each year per 1,000 people in the midyear population. It is called âcrudeâ because it does not take into account the possible effects of age structure.
A cesarean delivery is a birth that occurs through an incision in the abdominal wall and uterus rather than through the vagina. There has been a gradual increase in cesarean births over the past 30 years. In November of 2005, the Centers for Disease Control and Prevention (CDC) reported the national cesarean birth rate was the highest ever at 29.1% . This means that more than 1 in 4 women are likely to experience a cesarean delivery.