Weapons physicist Greg Sprigg has spent five years declassifying, digitizing and reanalyzing film of the U.S.'s 210 open air nuclear detonations.

Watch Declassified Nuclear Bomb Tests Online

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To start, let's be clear that there's no way King Kong or any other gigantic ape is living somewhere undetected on Earth.

How Big Can a Land Animal Get?

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“All objects have a story to tell, but puppets are objects with rare power,” writes puppet expert Steve Abrams.

Why Puppets (and Puppeteers) Are Still Important

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Jack the Ripper was responsible for Britain's most notorious wave of unsolved murders. Theories have emerged as to the killer's identity. Here are five candidates. via mental_floss

5 People Who Were Suspected of Being Jack the Ripper

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Ordinary people, not beloved artifacts, form the heart of this museum where small stories loom large, coursing through the galleries like so many streams flowing into the same revolutionary river.

Telling the Forgotten Stories of the Everyday Americans of the Revolutionary War

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Zebrafish are only a few centimeters long, but they’ve got some supersized powers.

Could the Tiny Zebrafish Teach Us to Cure Blindness?

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With flint and derring-do, the early 20th century pilot Ruth Law ruled American skies.

This Ace Aviatrix Learned to Fly Even Though Orville Wright Refused to Teach Her

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Julia will make her first television appearance on April 10, becoming the first new Muppet to join the Sesame Street cast in a decade.

Sesame Street to Introduce Julia, a Muppet with Autism

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yesterday at 21:15. Facebook
On Tolkien Reading Day, listen to the author reading "The Fellowship of the Ring."

Listen to J.R.R. Tolkien Read Songs and Poems from 'The Lord of the Rings'

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By this time last year only 289,663 acres had burned and in 2015 (the year with the most wildfires on record) only 114,186 acres were affected.

Wildfires Have Already Charred Over 2 Million Acres This Year

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As it entered World War I, the United States was politically torn and financially challenged. An American icon came to the rescue.

How the Liberty Bell Won the Great War

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A group of Chinese scientists discovered the 100-million-year-old damselflies—insects similar to dragonflies—in the Hukawng Valley of Kachin Province, Myanmar.

Flirtatious 100-Million-Year-Old Damselflies Found Frozen in Amber

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The West may have rejected whale captivity, but the painful relationship between humans and orcas is far from over.

What Will It Take to End International Killer Whale Capture?

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yesterday at 15:45. Facebook
Viewers first introduction to the Simpson family came on the acclaimed but barely watched Fox variety program, “The Tracey Ullman Show.”

Your comments on this post could be featured in next month's issue of Smithsonian Magazine.

The Simpson Family Made Its Television Debut 30 Years Ago

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These four-legged, wheel-less robots will explore asteroids and the frigid outer worlds of our Solar System.

A New Generation of Interplanetary Rovers is Crawling Toward the Stars

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yesterday at 13:15. Facebook
If you've ever wanted to explore the Titanic, here's your chance - as long as you have $105,129.

Tour Company Offers (Very Expensive) Dives to 'Titanic' Wreckage

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130 lucky passengers got to see the Aurora Australis up close and personal on the first aurora-viewing charter flight out of New Zealand.

New Charter Flight Takes Passengers to See the Southern Lights

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"It may mean that a first was so far ahead of its time that we all but refuse to believe that it could have occurred so long ago." via All That Is Interesting

Historic Firsts That Happened Way Before Most People Think They Did

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Are seals to blame for bringing tuberculosis to America? #FBF #WorldTuberculosisDay

Tuberculosis Probably Hitched A Ride To America on Seals

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This is the tale of a lifelong romance that has two happy endings.

This Couple Just Donated Their Collection of More Than a Million Bugs

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