COLD WAR

Hanford, Washington, became the site of nuclear experiments.

Green Run: When the U.S. Government Released Radiation in the Pacific Northwest

In the 1940s, residents near Hanford, Washington, were getting dosed with the radioactive equivalent of Three Mile Island every day.

Four UFOs appeared in the sky at 9:35 a.m. on July 15, 1952 over a parking lot in Salem, Massachusetts.

Think You Spotted a UFO? See What the 1952 Questionnaire for Reporting Sightings Looked Like

Project Blue Book's questionnaire had sections for describing UFOs and even sketching pictures.

CCCP USA Superman, French Cold War Political Protest Poster

6 Misconceptions About the Cold War

We're detailing some of the most common misconceptions about the Cold War, including how close we came to World War III and Pepsi's impact on world affairs.

Nuclear Test Footage From the 1950s Shows Fake Towns Getting Incinerated

In the 1950s, the U.S. government built fake houses on its nuclear test site in Nevada, and many of them didn't survive.

Scientists from the expedition tagging whales in the Santa Barbara Channel.

The Loneliest Whale: Documentary Chronicles a Search for the 52 Hertz Whale

Fifty-two Hertz, dubbed 'the loneliest whale in the world,' has roamed the Pacific for decades, singing at a much higher frequency than other whale species.

Los Angeles, California, is home to several segments of the Berlin Wall.

15 Surprising Places to See the Berlin Wall

After the Berlin Wall fell, it didn’t completely disappear. Here are 15 surprising places where segments of the Berlin Wall stand today.

Experience the Past With This Subscription Service That Delivers Replicas of Historical Documents Every Month

With History by Mail, you'll receive recreations of historical documents every month to collect, display, and obsess over.