The parts of the brain known to help process fear and negative emotion are hyperactive when someone with math anxiety confronts a tricky problem, scientists say. iStockphoto hide caption

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There are now 15 known convex pentagons, or nonregular pentagons with the angles pointing outward, that can "tile the plane." EdPeggJr/Wikimedia Commons hide caption

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Head coach Po-Shen Loh (far left) and assistant coaches John Berman and Alex Zhai (far right) flank the members of the winning squad: Shyam Narayanan, David Stoner, Michael Kural, Ryan Alweiss, Yang Liu and Allen Liu. Courtesy of Po-Shen Loh hide caption

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Princeton University professor John Nash speaks during a news conference at the university in Oct. 1994 after being named the winner of the Nobel Prize for economics. Charles Rex Arbogast/AP hide caption

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Education experts faced off on the motion "Embrace the Common Core" at an Intelligence Squared U.S. debate, moderated by John Donvan (center). Samuel LaHoz/Intelligence Squared U.S. hide caption

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Source: Columbia Prediction of Infectious Diseases, World Health Organization Credit: Alyson Hurt/NPR

A sixth sense? A small patch of neurons on either side of the brain recognizes how many dots are on a screen. As more dots appear, active neurons shift to the right. Courtesy of Ben Harvey/Utretch University hide caption

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Math and sports are expressions of our controlled creativity. Above, Brazil goalkeeper Julio Cesar watches as the ball sails past for an England goal by Frank Lampard during a friendly at London's Wembley Stadium on February 6, 2013. Adrian Dennis/AFP/Getty Images hide caption

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