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Pi Day pies.

Indiana Almost Made Pi Equal to 3.2, and Other Pi Day Facts

As you celebrate the mathematical holiday, here's a history of notable moments in the irrational number's past

Smokey the bear being given a fire helmet by Washington Fire Departments’ deputy fire chief, M.H. Sutton in 1950

Trending Today

The Real Smokey Bear Has A New Biography

It’s officially licensed by the Forest Service and written from Smokey’s point of view

Cool Finds

This Is How New Words Enter the Vernacular of ASL

Selfie, photobomb and five-second rule all have signs in progress

What little-known facts could you learn about FDR?

Ten Fascinating Presidential Facts to Impress on Presidents' Day

Learn a new side of the Commanders-in-Chief, from whiskey seances and magazine cover boys

No snowman is perfect, but a bit of physics know-how can help in the construction process.

Ask Smithsonian

Do You Want To Build a Snowman? Physics Can Help

Here’s what you need to know about the science of constructing your very own Olaf

Bearing witness to the historic march and the freedom songs sung along the way, Carl Benkert carried a large tape recorder hidden from the police and angry whites.

Listen to the Freedom Songs Recorded During the March From Selma to Montgomery

When MLK called for people to come to Selma, Detroit's Carl Benkert arrived with his tape recorder, making the indelible album "Freedom Songs"

This airport shuttle can make a round-trip run on the waste produced by a single person in one year.

This Commuter Bus Runs On Poop

A U.K.-based biogas plant has developed a 40-seater than runs on converted sewage and food waste

Cool Finds

How the Word “OK” Was Invented 175 Years Ago

OK is an editorial joke run wild

Trending Today

Anyone Can Make Up Their Own Weird Or Random Holiday

Case in point: Today is International Coffee Day as well as National Poisoned Blackberries Day

New Research

Lack of Workplace Support Keeps Women Out of Engineering Careers

Aspiring female engineers say that they perceive little chance of advancing in their field

Who Has the Best Facial Hair in Baseball History?

As long as there have been home runs and strike outs, ballplayers, even some Yankees, have sported mustaches, beards and side burns

Itinerant African American musicians played to so many different audiences that they had to be as versatile as a jukebox.

Before There was the Blues Man, There Was the Songster

A new release from Smithsonian Folkways celebrates the diverse sounds of turn-of-the-century itinerant musicians

Cool Finds

This Radio Station Broadcasts All Over the World, But Only at Breakfast Time

Global Breakfast Radio operates in every time zone on the planet

Trending Today

Watch This Bear Cub Rock Climb!

You have time for one too-adorable-for-words video

The Pininfarina Cambiano inkless pen stylishly combines wood, aluminum and a special metal alloy to allow the writer to sketch infinite lines.

Tech Watch

This Inkless Pen Lets You Write Forever

A renowned design firm has unveiled a pen with a special metal alloy that creates permanent markings without running dry

Inventing the Perfect Umbrella

Will a Japanese designer's new take on umbrellas catch on where others have failed?

Distant view of man standing with Macy’s Day Parade balloons

The Puppeteer Who Brought Balloons to the Thanksgiving Day Parade

A Thursday morning tradition came with strings attached

The original lineup for speakers at the Lincoln Memorial for the March on Washington. (Text by Megan Gambino.)

Document Deep Dive

Document Deep Dive: A Play-by-Play of the March on Washington

Fifty years after the historic event, take a look at the lineup of speakers who addressed the crowd of 250,000 at the Lincoln Memorial

Barns Are Painted Red Because of the Physics of Dying Stars

Have you ever noticed that almost every barn you have ever seen is red? Here's why.

How a Pizza Maker Revolutionized the Stunt-Kite-Flying World

First, let's establish the fact that there is something in the United States called the American Kitefliers Association

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