️<unk>️<unk>️<unk>️  (CNN) Pi Day is going to be extra special this year, as 2015 stretches the symbolic March 14 celebration out a little longer to 3.1415. (CNN) Pi Day will be extra special this year, as 2015 stretches the symbolic March 14 celebration out a little longer to 3.1415. (CNN) Pi Day is going to be extra special this year, as 2015 stretches the symbolic March 14 celebration out a little longer to 3.1415. ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą <unk> <unk> <unk> <unk> <unk> <unk> <unk> About pi. π π π π π π π π π ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> pi<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> π<unk> <unk> <unk> <unk> Pi Day<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Physicist Larry Shaw, who worked in the electronics group at the museum, started celebrating pi on March 14, 1988, primarily with museum staff. <unk> <unk> <unk> Celebrations. ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ <unk> <unk> <unk> For more about pi, visit www.piday.org. For more about pi, visit www.piday.org. Elizabeth Landau of CNN contributed to this report.
<unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> San Francisco's Exploratorium and Princeton, New Jersey, go all out.