Professor Javier Cabrera Darquea (1924-2001) created it.
After years of concern that girls were being shortchanged in male-dominated schools, especially in math and science, there has grown a rising chorus of voices worrying about whether boys are the ones in peril.(CNN) -- There are 96 million people in the United States who have no spouse. "Single" is defined as adults who have never been married, are divorced or are widowed in the bureau's America's Families and Living Arrangements survey of 2009.That means 43 percent of all Americans over the age of 18 are single, according to the U. Of the singletons, 61 percent of them have never said "I do." Twenty-four percent are divorced and 15 percent are widowed.About 46 percent of all households nationwide are maintained by a single person. And 11.6 million single parents -- mostly mothers -- were living with their children in 2009.The census reported 9.9 million single mothers and 1.7 million single fathers lived with their kids.
Seventeen percent of singles were 65 years or older in 2009.