Pi Day 2015 Art Posters by Martin Krzywinski
On March 14th celebrate Pi Day. Hug π—find a way to do it. For those who favour τ=2π will have to postpone celebrations until July 26th. Some of these folks will argue that π is wrong. If you're not into details, you may opt to party on July 22nd, which is π approximation day (π ≈ 22/7).