Andrew Carnegie built his mansion on the corner of Fifth Avenue and 91st Street, asking for the “most modest, plainest, and most roomy house in New York.”

The Cooper Hewitt, Smithsonian Design Museum Makes Its Grand Re-Opening in New York City

The old and the new crash into each other beautifully in the former Carnegie mansion

Though playing music is common in operating rooms, sleeping is not.

What’s Your Surgeon’s Jam? Probably Classical or Soft Rock

British doctors make the case for playing music during an operation

This 1897 calendar is brought to you by parading cats.

After 12/13/14, What Are the Next Fun Dates for Math Lovers?

Sequential integers are a bit boring, anyhow. Here are some more exciting sequences to celebrate over the next 89 years

Mid-century Santa and Mrs. Claus on candy canes skis.

The Evolving Face of Santa, As Seen in the Smithsonian’s Vast Collections

A look into Smithsonian’s vast archives reveals that Father Christmas tends to get a makeover with every generation that embraces him

Amphitheater and mountainous landscape in Red Rock Park, Colorado.

When America Invested in Infrastructure, These Beautiful Landmarks Were the Result

Explore eight of the Works Progress Administration’s most impressive structures.

Show Us the Holiday Decorations in Your Neighborhood

What does the holiday season look like in your community? Upload a photo of the best light displays, Christmas trees, menorahs and other festive scenes

Enthusiasts examining the patch for NROL-35 think the trident, fire and breeze through the character’s hair might represent the elements—water, fire and wind. “What that has to do with the actual payload, however, is anyone’s guess,” says space historian Robert Pearlman.

The Creepy, Kitschy and Geeky Patches of US Spy Satellite Launches

There may be method to the madness behind the outlandish designs of the National Reconnaissance Office mission patches

The first crop for Local Roots Farms to grow is lettuce.

Future of Energy

Turning Shipping Containers Into Urban Farms

In a clever recycling experiment, the startup Local Roots Farms is growing organic, hydroponic produce in America’s food deserts

Segah, a male belly dancer, performs in a gaudy nightclub off Istanbul's Istiklal Street

Inside the World of Istanbul’s Male Belly Dancers

The nation’s shifting views toward homosexuality have opened the market for a centuries-old tradition

The mind behind Simon was the innovator Ralph H. Baer.

The Not-So-Simple Simon Proved the Young Were Swifter Than the Old

In 1978, the new blinking, bleeping toy ushered in the era of computer games

British fashion photographer Rankin has a new book out featuring collaborations with makeup artist Andrew Gallimore.

Fashion Photographer Rankin Has A New Book of Models in Wild Makeup

The British photographer reveals some unusual new portraits, with a hodgepodge of influences

Candy Crush Soda Saga brings classical music to tablets, smartphones and computers around the world.

Why the Composer of Candy Crush Soda Saga is the New King of Video Game Music

You may have never heard of Johan Holmstrom, but millions listen to his music every day

The Shape of Things to Come, Antarctic Sound, February 2010: "As we sailed with the land to our backs, I saw this bright, jagged iceberg with a dark-blue sea," writes Seaman.

Art Meets Science

These Photos Capture a Decade of Change at Earth’s Poles

From courting penguins to moody icebergs, photojournalist Camille Seaman shares her personal journey through polar habitats

Miracle fruit, or Synsepalum dulcificum, grows on bushy trees native to West Africa.

Can This Berry Solve Both Obesity and World Hunger?

At a playful café in Chicago, chef Homaro Cantu is experimenting with miracle fruit, a West African berry that makes everything a little sweeter

Off for the Sabbot, circa 1927

The Photographer Who Ansel Adams Called the Anti-Christ

William Mortensen’s grotesque, retouched photos of celebrities were a far cry from the realism favored by the photography elite

Prelorán left Argentina and eventually settled in Los Angeles. He's shown here during the filming of Casabindo in 1977.

Rescuing Jorge Prelorán’s Films From Storage And Time

The Smithsonian’s Film Archives is reintroducing the world to the influential work of the Argentine-American filmmaker

Scientists found deliberate scratching on a fossil Pseudodon, likely an engraving made by Homo erectus at Trinil in Indonesia.

New Research

Zigzags on a Shell From Java Are the Oldest Human Engravings

The early human Homo erectus also made the oldest known shell tools half a million years ago

Evergreen, 2008, Acrylic and charcoal on paper 22 1/2 x 30 inches (57.15 x 76.2 cm)

These are the Forgotten Places in Your Neighborhood, Painted

Artist Kim Cadmus Owens celebrates the places we ignore

Fred Savage (right) and Josh Saviano (left) of "The Wonder Years" reunited at the American History Museum on December 2, 2014 to donate items, including the New York Jets jacket shown here in a publicity photo from around 1988.

Fred Savage and “The Wonder Years” Cast Reflect on Why Their Show Still Matters

The cast and crew of “The Wonder Years” reunited at the American History Museum today to donate costumes and other artifacts

Lts. Frank Ballou and Samuel Peterson test out a new metal bulletproof shield. The shield's inventor, Elliot Wisbrod, is the man holding it.

Up-Close and Personal With Chicago’s Most Infamous Criminals

“Gangsters & Grifters,” a book by the Chicago Tribune, recalls a time when photographers had unprecedented access to the world of crime

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