Topic: history

Sort: Date | Title | Sort Ascending
View:

The stories behind Fahrenheit and Celsius

Fahrenheit (°F) is a unit of measurement for temperature. Daniel Gabriel Fahrenheit (1686–1736) is the inventor of the mercury-in-glass thermometer and the aforementioned scale of measurement. In this Veritasium video...

Earth’s History Plays Out On A Football Field

The Earth is 4.5 billion years old. How can we comprehend such a massive amount of time? Skunk Bear's Adam Cole sets out to answer this question by using the 100 yard length of a football field to help us visualize ou...

Neil deGrasse Tyson Replies to Lincoln’s Gettysburg Address

"I got a phone call from the Abraham Lincoln Library Foundation, and they asked me, would I mind composing 272 words of my own reflecting on Abraham Lincoln's Gettysburg Address? I'm going to read you what I wrote..."...

Marie Tharp: Uncovering the Secrets of the Ocean Floor

In the early 20th century, Alfred Wegener proposed a revolutionary idea: that the Earth’s continents were once joined together, and had gradually moved apart. The idea contradicted almost everything scientists thought...

Globe Making (1955) – British Pathé

Skilled British artisans in this North London globe making workshop would painstakingly create 60,000 world globes every year. This awesome 1955 film from British Pathé showcases their step-by-step process. Wikipedia ...

How a mathematician dissects an astonishing coincidence

True story about an adventure that befell Anne Parrish one June day in Paris. She was wandering through the old book stalls along the Seine with her husband who had been there before. He sat down at a table on the qua...

Toothpaste – Ingredients With George Zaidan

Cultures throughout history have tried a variety of things to clean their teeth... Egyptians and Babylonians brushed with twigs around 3500-3000 BC. In 5000 BC, a recipe of ox hooves, eggshells, myrrh, and pumice woul...

The art of Japanese marquetry

Crafted with different colors of wood arranged in intricate patterns, Yosegi Zaiku or Japanese marquetry is a style of object decoration that's practiced in Hakone, a town near Mount Fuji. No wood staining is used to ...

What causes cavities?

When a team of archeologists recently came across some 15,000-year-old human remains, they made an interesting discovery: the teeth of those ancient humans were riddled with holes. So what causes cavities, and how can...

A Sketchy History Of Pencil Lead

When fifth-graders at Green Acres Elementary in Lebanon, Oregon asked the NPR Skunk Bear team how pencil lead was made, they looked into it... way into it. From the start of the universe (with a shout out to Carl Saga...

The Amazing Shapes of Ammonites

Now extinct, ammonites are abundant, prehistoric sea molluscs that first appeared in the fossil record around 240 million years ago. The images of ammonites that we often see in museums and books are planispiral-shape...

Portrait of Innovation: James Conway Farley

Born to enslaved parents in Prince Edward County, Virginia on August 10, 1854, James Conway Farley became the country's first prominent African American photographer, winning awards for his work, as well as enduring t...

The 1995 Hubble photo that changed astronomy

If you hold a pin at arm’s length up in the air, the head of the pin covers approximately the amount of sky that appears in the Hubble Deep Field. The iconic 1995 image is crowded, not because it’s a broad swath of sk...

The Loneliest Tree in the World

In 1895, John Medley Wood discovered a cluster of peculiar Encephalartos Woodii on the fringe of the oNgoye Forest in KwaZulu-Natal, South Africa. A basal offset of the male dioecious tree was sent to Kew Gardens in L...

Installing massive statues with engineering and care at the Met

How do you move and install a three ton statue circa 170 BC? How do you move and install a ten ton statue? In these behind-the-scenes time lapse video from the Metropolitan Museum of Art in New York City, we get to se...

Slingshots of the Oceanic

There are many ways of moving through the Universe – of traveling from one point to another over great, even extraordinary distances. There is also a way of using the world for your own ends: taking advantage of slope...

Kids Try 100 Years of Sandwiches from 1900 to 2000

If you've been unhappy with the food in your school lunchbox or are looking for a few new ideas, find some inspiration in this unusual but super delicious history lesson from Bon Appétit: Kids Try 100 Years of Sandwic...

Why the metric system matters

The United States is one of three countries in the world that has not adopted the metric system, and that may fall to two if Burma embraces metrication. How did inches, feet, pounds, gallons, and other familiar United...

« Prev