Topic: history

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Why Warm Blood is Better Than Cold – Rise of the Mammals

What does a tiny Hadrocodium wui fossil tell us about the evolutionary advantages that mammals were developing before the Cretaceous–Paleogene mass extinction event that finished off the dinosaurs 65 million years ago...

The Story of Light – Future Impossible by Bell Labs

This story begins with one little text message from New York to Shanghai, a trip that takes just 1/20th of a second. "That's the time it takes light to traverse 10,000 kilometers." And that's what happens millions and...

Who’s on First – Abbott & Costello (1953)

William "Bud" Abbott and Lou Costello were vaudeville comedians who became famous in radio, film, and television as Abbott and Costello. In 1938, they performed Who's on First, a rapid-fire routine that had been rewor...

How many LEGO combinations can be made with 6 standard bricks?

"How many ways can you put together six of these bricks?" This question, asked and answered in 1958 with an estimate of 103 million, has only recently been answered correctly, thanks to math professor Soren Eilers and...

How New York City’s subway technologies are being modernized

"People know that the system is old, but I don't think they realize just how old it is... in our system, it's not just the architecture that's 100 years old. It's a lot of the basic technology, as well. The infrastruc...

An Animated History of Transportation Through the Centuries

From the invention of the canoe in 8,000 B.C. to the recent rise of self-driving cars, enjoy this animated review of how humans have traveled from here to there through the centuries: An Animated History of Transporta...

Sunlight is way older than you think – TED Ed

The random walk problem -- the "mathematical formalization of a path that consists of a succession of random steps" -- can be applied to sunlight... not the sunlight that travels from the sun to Earth, which takes onl...

Are We Really 99% Chimp? – Minute Earth

When researchers decoded the chimpanzee genome in 2005, they explained that we share 99% of our DNA with chimpanzees... but what does that specifically mean? This episode of MinuteEarth illustrates how that one percen...

Why do we sleep and how do different animals sleep?

Why sleep is such an important part of our lives? ...and on a related note, why is bedtime so important? Based on what our bodies (and other animal bodies) accomplish while sleeping, there are a few leading theories a...

An animated history of Housing Through the Centuries

Yurts are lightweight and easy to set up and take down, good for when you're moving hungry animal herds to more plentiful locations. Stilt homes are built to withstand flooding and to keep pests out. Skyscrapers, made...

Chimpanzees Would Cook if Given the Chance, Research Says

Would chimpanzees be interested in cooking their food? Would they have the patience to wait if given the opportunity? To find out these answers, how do you create a safe experiment that doesn't include fire or real co...

Celebrating Sally Ride, the first American woman in space

On June 18th, 1983, NASA physicist Dr. Sally Ride became the first American woman astronaut to fly in space. Orbiting Earth on Space Shuttle Challenger, she inspired an entire generation to follow their interests in s...

Flying a drone over Sudan’s 3,000 year old Nubian Pyramids

Present-day Sudan has more pyramids than Egypt does, smaller structures known as Nubian pyramids that were built by the rulers of the ancient Kushite kingdoms. The first site of these royal tombs was in El-Kurru in no...

How do batteries work?

If you've ever used a flashlight, or changed the channel with a remote control, if you've ever recharged your electric car, or if you're reading this on a smart device, then you know how useful batteries can be. But h...

The Hubble Space Telescope Reflects the Cosmos

"When the Hubble Space Telescope was launched from the Space Shuttle Discovery in 1990, NASA called it the greatest advance in astronomy since Galileo. Instead, within days it became a laughing stock. Hubble had an ei...

Deepwater Horizon oil spill: Where did the oil go?

In April of 2010, a BP Deepwater Oil rig in the Gulf of Mexico exploded, killing eleven workers and unleashing an unprecedented amount of sticky black crude into the gulf waters, beaches, wetlands, and surrounding eco...

Reading Rainbow: LeVar Burton visits the Grand Canyon

Take a video field trip to the Grand Canyon with LeVar Burton and Reading Rainbow as he explores the canyon's history, early inhabitants, and its original formation. The views are incredible from a boat on the Colorad...

Driving the newly restored 1910 Fiat S76 ‘Beast of Turin’

Spewing exhaust, sparks, and flames, this 1910 Fiat S76 was unofficially the fastest car that existed in 1911. It definitely looks fast... and sounds loud. The vehicle was recently restored by owner Duncan Pittaway, a...

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