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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

Maricopa County, Arizona Sheriff's officials say a man has been taken into custody after threatening to shoot churchgoers in the north Valley. The investigation began on February 19, when detectives received a Facebook post in Romanian. The post reportedly translated into concerning statements, but nothing specific about the North Valley Romanian Pentecostal Church. A witness reportedly overheard a phone conversation in Romanian on speakerphone. In that call, Ismaiel Damian indicated he was planning on entering the church to shoot and kill many people in attendance with his machine gun. Detectives monitored Damian leaving for the church and took him into custody on Sunday.A .38 Special Taurus revolver was located in his vehicle. Damian was booked into a jail for misdemeanor use of an electronic communication to terrify, intimidate, threaten or harass.  907

MILAN (AP) — The Mount Etna observatory says lava and ash are spewing from a new fracture on the active Sicilian volcano amid an unusually high level of seismic activity.The Etna observatory said a swarm of 130 tremors have been recorded by Monday midday, the most powerful registering a magnitude of 4.0. It reported lava flows from the volcano and said a new fracture had opened near its southeast crater.The owner of a refuge on the volcano says hikers are being brought down from higher elevations to 1,900 meters (6,230 feet) for their safety. But there are no reports of injuries, and so far the spewing ash was not causing disruptions to residents of nearby towns and cities.Etna, the largest of Italy's three active volcanoes, has been particularly active since July. 783

MEMPHIS, Tenn. (AP) — U.S. Supreme Court hopeful Amy Coney Barrett graduated with honors in 1994 from a small liberal arts school — Rhodes College in Memphis, Tennessee. But more than 1,500 alumni are not proud of their school's ties to the conservative lawyer and judge. They have posted a letter on social media expressing their opposition to Barrett's nomination to replace Justice Ruth Bader Ginsburg on the U.S. Supreme Court after Ginsburg's death last month. The letter came after Rhodes president Marjorie Hass praised Barrett for her academic record and her "professional distinction and achievement." The alumni letter criticizes Barrett's stances on abortion law and the LBGTQ community. 706

Message from Ron Paul: "I am doing fine. Thank you for your concern." pic.twitter.com/aALmLn8xIj— Ron Paul (@RonPaul) September 25, 2020 144