A technician takes an X-ray fluoroscope of a female patient. Fluoroscope exams delivered much more radiation exposures than modern X-rays.

Just Months After Its Discovery, the X-Ray Was in Use in War

The public was also fascinated by the fact it was possible to take pictures of somebody’s insides

Vera Rubin makes observations through the Flagstaff Telescope.

Trending Today

Five Things to Know About Boundary-Breaking Astronomer Vera Rubin

Her observations confirmed the theory of dark matter, and her activism helped open science to more women

An interior shot of Hagia Sophia. Its name means "Holy Wisdom" or "Sacred Wisdom."

You Can Hear Hagia Sophia’s Sublime Acoustics Without a Trip to Istanbul

Stanford scientists have digitally created the building’s unique sound, taking listeners back to the Middle Ages

A wapato bulb

Canada

The Northwest’s Earliest “Garden” Discovered in British Columbia

The 3,800-year-old stone platform was used to cultivate wapato—wild water potatoes—a staple crop for many North American peoples

Boo! Telling ghost stories on Christmas was a tradition for hundreds of years. Here, Marley's ghost surprises Ebenezer Scrooge in an illustration from the first edition of the classic tale.

Why Do People Tell Ghost Stories on Christmas?

Christmas ghost stories are a tradition going back much farther than “A Christmas Carol”

Score was a tiny communications satellite attached to a really big rocket.

Cool Finds

Celebrate Christmas With the First Voice Ever Broadcast in Space

Eisenhower kicked off the space race with a goodwill wish

The National Menorah and one of the state Christmas trees near the White House in 2009.

Someday, Maybe We’ll Have Hanukkah in July

Hanukkah and Christmas fall on the same day this year because not everyone follows the same calendar

The American holiday celebrating African traditions is 50 years old this year.

This Year Marks the 50th Kwanzaa

The week-long holiday is a celebration of African-American culture

Tens of thousands of sticky notes were used to create the communal artwork/therapy session.

Cool Finds

New Yorkers’ Post-Election Post-its Will Be Preserved

Subway Therapy captured a city’s outpouring of emotion. Now, the notes New Yorkers left behind will be archived

Lillian Randolph in It's A Wonderful Life, with a dusting of fake snow made from foamite, sugar, water and soap.

The Crazy Tricks Early Filmmakers Used To Fake Snow

Cornflakes, flour and, uh, asbestos were all used in early movies

Uniformed Letter Carrier with Child in Mailbag

Smithsonian Podcast

A Brief History of Children Sent Through the Mail

In the early days of the parcel post, some parents took advantage of the mail in unexpected ways

Crossword puzzles have been around for over one hundred years. In that time, they've gone through fads.

Why Crossword Puzzles Are Still Mostly Written By Humans

Computers can write sports articles, replace stock brokers and help diagnose patients. But they can’t write good crosswords

Poland's Sjem, or lower house of parliament, was the site of a recent showdown on press freedoms.

Trending Today

Poland Has Lifted Its Media Ban

It’s the latest in an ongoing saga about press freedoms in the populist-led country

The Westinghouse Atom Smasher in its prime.

The Strange Story of the Westinghouse Atom Smasher

The giant bulb was an important part of early American nuclear history. Now it’s part of a miniature railroad

Eggnog is connected to a medieval drink called posset.

The Long, Rich, Boozy History of Eggnog

This December, we’re exploring the drink’s storied history

Anne Frank in 1940, four years before her arrest and deportation.

Trending Today

Anne Frank May Not Have Been Betrayed

New evidence suggests the family was not specifically targeted, but rather discovered during an investigation related to illegal ration coupons

The first edition of A Christmas Carol. The illustration on the left is of Mr. Fezziwig's ball, one of Scrooge's good memories.

Why Charles Dickens Wrote ‘A Christmas Carol’

The beloved story sold 6,000 copies in its first week in print and 15,000 in its first year

A photo of Bill Clinton taken in 1993, the first year of his presidency.

Presidents Can Be Impeached Because Benjamin Franklin Thought It Was Better Than Assassination

The founding fathers struggled with the idea of whether the top leader should be impeachable

South Texas is among the most inhospitable places to cross the border—and is now the most popular.

Cool Finds

New Database Helps Families ID People Who Died Crossing the Border

I Have a Name/Yo Tengo Nombre offers a devastating glimpse of those who are gone—and a glimmer of hope to those who want to find them

A modern flight data recorder, a.k.a. a "black box." Despite the name, these recorders are typically painted orange.

On This Day, The Black Box Proved Its Worth

The Park Slope plane crash was a tragedy, but it proved the importance of the flight data recorder

Page 256 of 327