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Math enthusiasts know all about it, and the rest of the population is probably hoping for cherry pie.But March 14 is Pi Day. While last year stretched the symbolic celebration out a little longer -- to 3.1415 -- each year presents ample opportunity for learning.To 31 decimal places, the celebrated irrational number that never ends is 3.1415926535897932384626433832795.A few more tidbits about pi and Pi Day:About piPi is the ratio of the circumference of a circle to its diameter. It's not equal to the ratio of any two whole numbers, so an approximation -- 22/7 -- is used in many calculations.Pi is essential in architecture and construction and was used frequently by early astronomers. Pi has been known for about 4,000 years, but it started to be called by the Greek letter only in the 1700s.The origin of Pi DayPi Day started 30 years ago at San Francisco's Exploratorium.Physicist Larry Shaw, who worked in the electronics group at the museum, started celebrating pi on March 14, 1988, primarily with museum staffers. The tradition has grown to embrace math enthusiasts from all walks of life.For more about pi, visit www.piday.org. 1159

Melania Trump announced Monday afternoon that she will go to Africa in October for her first major solo trip since becoming first lady."This will be my first time traveling to Africa and I am excited to educate myself on the issues facing children throughout the continent, while also learning about its rich culture and history," the first lady said in a statement. "We are a global society and I believe it is through open dialogue and the exchanging of ideas that we have a real opportunity to learn from one another."The Associated Press was first to report her travel plans.In January, CNN reported that President Donald Trump, at a closed-door meeting at the White House, bemoaned the influx of immigrants from what he deemed "s---hole countries" in Africa, according to sources. 793

MIAMI (AP) — A 2-year-old girl is recovering after falling from a fourth-floor window of a Miami apartment. Miami Fire Rescue Capt. Ignatius Carroll told WPLG that a palm tree under the window helped slow the speed of the child's fall early Monday. She landed in some bushes. She was being cuddled by her uncle and was crying when rescue crews arrived at the scene. The girl was then taken to a hospital for treatment. Miami Police Cmdr. Freddie Cruz told the TV station that detectives were trying to determine what led to the fall and whether the girl's parents bear any responsibility.No additional details were immediately available. 645

MEXICO CITY (AP) -- Mexican police and military forces have arrested the leader of the Santa Rosa de Lima gang who spread violence through north-central Mexico and fought a years-long bloody turf battle with the Jalisco cartel.The armed forces and officials in the state of Guanajuato announced Sunday they had captured José Antonio Yépez Ortiz, better known by his nickname "El Marro," which means "The Sledgehammer."Yépez Ortiz was unusual among gang leaders because he posted videos with emotional calls to his followers, including one showing him appearing to cry after several of his supporters and relatives were arrested.He was caught allegedly holding a kidnap victim. 684

MEMPHIS, Tenn. (AP) — Two Tennessee men are accused of raping a 9-month-old girl and filming the attack.News outlets report 19-year-old Isiah Dequan Hayes and 22-year-old Daireus Jumare Ice were indicted by a grand jury Tuesday on charges including especially aggravated sexual exploitation of a minor.A Shelby County District Attorney General's office release says the men were reported to police in 2016 when the girl's mother found footage of the attack. She was able to identify the men from the video.The release says investigators determined Hayes was in the video and Ice filmed it. Hayes also was indicted on a charge of aggravated rape of a child. Ice also was indicted of being criminally responsible for the conduct of another person in the aggravated rape of a child. 797