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What's Pi Day all about? Math, science, pies and more
National

What's Pi Day all about? Math, science, pies and more

  • By CURT ANDERSON Associated Press

College students, rocket scientists and math enthusiasts around the world are celebrating Pi Day. The holiday on March 14 — or 3/14 — correlates to the first three digits of the infinite number. It's also Albert Einstein's birthday, making the pie eaten at Pi Day gatherings all the sweeter. Pi is a mathematical constant that expresses the ratio of a circle's circumference to its diameter. It is part of many formulas useful in physics, astronomy, engineering and other fields, dating back thousands of years to ancient Egypt and Babylon. Across the country, many events now take place on college campuses.

Bay Area leading in water conservation
Local News
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Bay Area leading in water conservation

  • By Kiley Russell Bay City News Foundation

The latest statewide water conservation numbers are improving, having more than doubled from May to June, and the Bay Area is leading the way.