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Ammonites swam in the Western Interior Seaway that once covered a large portion of North America. These iridescent fossils from South Dakota, around 69–72 million years old, preserve inner shell layers made of aragonite, the same mineral that gives pearls their luster.

An Ancient Sea Once Split North America Down the Middle. The Beautiful Multicolored Ammonite Shells From Its Waters Are So Perfectly Preserved That They Still Shimmer Today

Spectacular marine fossils tell the story of the long-gone Western Interior Seaway and the planet’s past aquatic life

Graves of unidentified soldiers who died at the Battle of Camden

DNA Reveals the Identity of a Teenager Who Died in the Revolutionary War, Cracking a Nearly 250-Year-Old Cold Case

John Pumphrey was still a boy when he enlisted in the Continental Army in 1777. After archaeologists discovered his remains, a genetic genealogy analysis identified 20,000 DNA matches for living relatives

Autumn colors frame a calm lake in Central Park as two people row beneath looming skyscrapers.

Verdant Beauty, Wide-Open Spaces, Elegant Architecture: Have a Look at 15 Photos That Show Why Central Park Is the Lifeblood of Manhattan

At the center of the concrete jungle, the green expanse provides New York with a real retreat to nature

Archaeologist Gino Caspari holds an iron artifact recovered from one of the Menorca shipwrecks.

Take an Exclusive Look at Three Newly Discovered Medieval Shipwrecks in Menorca’s ‘Cove of Mysteries’

Meteorological tsunamis likely sank the 13th-century trading vessels, whose cargo included objects from both Christian kingdoms and Moorish communities on the Iberian Peninsula

One of the most unusual public transportation systems in the world, the train hangs from an elevated steel track.

When Germany Built a Flying Train 125 Years Ago, a City Coalesced Beneath It. It Has Moved Royalty, Commuters and Tourists—and One Elephant—Ever Since

When there was no room on the ground, towns in the Wupper Valley looked to the skies and built a suspension railway that became a source of pride and connection

Bernardo de Gálvez by José Nicolás de la Escalera on display in the National Portrait Gallery exhibition “Out of Many: Portraits from 1600 to 1900.”

This Spanish Officer Besieged the British During the American Revolution, Giving George Washington Time to Plan a Pivotal Attack

Bernardo de Gálvez indirectly contributed to the Continental Army’s victory at the 1781 Siege of Yorktown. A rare painting of him is now on view at the Smithsonian’s National Portrait Gallery

To turn shrimp shells into a feedstock for hydrogen gas production, the process begins with mashing the shells into a rust-colored shrimp slurry.

How Shrimp Shells Are Being Turned Into ‘Carbon Negative’ Fuel, Food and Construction Materials

Engineers in Singapore have developed a new, multistep chemical process that transforms organic waste into useful, sustainable products

An illuminated American flag display casts its colors onto passing cars, merging national symbolism with New York City’s constant flow of people and light.

July 4 Is Always a Star-Spangled-Banner Day for Old Glory. Celebrate With These 15 Images of the American Flag

Nothing symbolizes the promise of the nation like the stars and stripes flapping valiantly in the blue sky. As we approach the country’s 250th anniversary, this collection offers a moment of reflection

The Creature Shop is located in Queens, inside the former Standard Motors building, a two-block-long behemoth with high ceilings and freight elevators capable of accommodating even the biggest birds. 

A Peek Inside Jim Henson’s Creature Shop, Where ‘Sesame Street’ Characters and Other Whimsical Puppets Are Designed

Every weekend, the magical workshop opens its doors for the public to see how legendary film and television characters are made

Bartlett Frost's Declaration of Independence diorama, copy after John Trumbull

America's 250th Anniversary

To Recreate One of the American Revolution’s Most Famous Paintings, This Artist Painstakingly Crafted Miniature Wax Figures of the Nation’s Founders

Bartlett M. Frost’s diorama is modeled after John Trumbull’s depiction of the presentation of the Declaration of Independence. Newly conserved, the work is now on view at the National Portrait Gallery

An image of Skylab captured by its final crew as they departed. During launch, one of the solar array wings broke off, and the gold sheet at the center was quickly manufactured afterward to serve as a makeshift sunshield and control the internal temperature.

America’s First Space Station Proved Humans Could Live and Work in Orbit for Months. Now, the Public Can See What It Looked Like in Person for the First Time in Eight Years

A backup version of Skylab was displayed when the Smithsonian’s National Air and Space Museum opened 50 years ago. After renovation of the building, the artifact is once more on view in a new gallery

Individuals and objects associated with Irish contributions to the American Revolution (clockwise from top left): Surgeon and statesman James McHenry, Quaker spy Lydia Barrington Darragh, Commodore John Barry, a letter written by Irish-born printer John Dunlap, Continental Army officer Stephen Moylan, Pennsylvania politician James Smith, Delaware politician Thomas McKean, and Charles Thomson's proposal for the Great Seal

America's 250th Anniversary

How Tens of Thousands of Irish Immigrants Led the Patriots to Victory During the American Revolution

Soldiers of Irish heritage accounted for up to 50 percent of the Continental Army’s ranks. Driven from their homeland by British oppression, Irish-born rebels also served as spies, politicians and more

Two people wearing hot dog hats line up to watch the Nathan's Famous Hot Dog Eating Contest on July 4, 2025.

From a Sea Turtle Release to an Outhouse Race, These Ten Fourth of July Traditions Celebrate America Like No Other

Revelers typically mark Independence Day with a barbecue and fireworks show, but these festivities across the country offer quirky alternatives

A 1916 photo of Frances Kellor

During World War I, This Woman Asked Americans to Welcome Immigrants—and Urged New Arrivals to Assimilate

Progressive reformer Frances Kellor spearheaded efforts to celebrate Americanization Day, arguing that immigrants should fully embrace U.S. culture to better adapt to life in their new home

Hujar's last portrait of Thek, taken in 1975

Queer Artists Peter Hujar and Paul Thek Drew From Their Intimate Relationship to Create Unique 20th-Century Works

Their fascinating, intense pieces are being highlighted in new exhibitions this year—and their story is chronicled in a recent book

Interstellar object 3I/ATLAS, imaged here with its broad coma of gas and dust, has captivated astronomers since its discovery on July 1, 2025.

A Rare Comet Made History as the Third Known Interstellar Object to Fly Through Our Solar System. Studies Are Now Revealing the Mysterious Conditions in Which It Formed

In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a peripheral region of a relatively calm planetary system

The daytime exterior of the National Geographic Museum of Exploration, taken from the courtyard

Years in the Making, National Geographic’s Museum of Exploration Is Here to Take You on an Adventure

The renovated space highlights the hallmarks of the iconic 138-year-old brand, from wildlife photography to the study of anthropology

A North Atlantic right whale swims with dolphins around its head in the Stellwagen Bank National Marine Sanctuary east of Boston.

Speed Limits for Ships Protect Endangered Right Whales From Vessel Strikes. Could the Animals Survive Without Them?

Since 2008, rules requiring ships to slow down to avoid collisions with North Atlantic right whales have reduced fatalities of the critically endangered animals. Now, NOAA is calling the regulations into question, raising concerns for the mammals’ future

Neon lights illuminate an oddly empty Santa Monica Pier at night.

You’ll Be More Than Amused by These 15 Photos of Theme Parks. Their Electrifying Attractions Will Have Your Heart Racing Before You Even Set Foot on a Ride

These images from the Smithsonian Magazine Photo Contest remind us that amusement parks have entertained generations of thrill-seekers

Poster of the 1876 Centennial Exhibition in Philadelphia

Everyone Wanted Alexander Graham Bell to Debut the Telephone at the Philadelphia Centennial Exhibition. He Almost Avoided It Entirely

The inventor had to be persuaded to make the trip from Boston, then balked at the thought of a delay in debuting his device. But history interceded, and his American innovation got its proper accolades

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