Well, Guys, seems a shock to me. PI which has a value of 3.142 or 22/7, that is widely used in every physical and mathematical work, will be changed by TAU, which has a value of 6.284 that is twice of PI. 2(PI) = TAU There are many sources. TAU is a challenge to PI. You can google it, the news is available on BBC, CNN and many others. [source]
Heh, this "discovery" does not seem to be quite so important, especially when you consider that TAU is just 2PI.. At best Tau is evidence that we came up with a bad convention when Pi became the standard circle constant.