Skip to main content

Subscribe to Smithsonian magazine and get a FREE tote.

Surprising Science

Six Ways to Celebrate Pi Day

Today is March 14, or 3.14, the day we celebrate the mathematical constant pi (π)

An Octopus Vulgaris at the Palma Aquarium in Spain

Fourteen Fun Facts About Squid, Octopuses and Other Cephalopods

The cephalopod world is huger and more fascinating than the limited taste of the restaurant world

None

Quagga: The Lost Zebra

In South Africa, quaggas were hunted to extinction in the late 1800s

None

HIV in 3-D

Page 36 of 65