Topic: time

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40,000 years of London history created with papercraft

Peel back the pavement of a grand old city like London and you can find just about anything, from a first-century Roman fresco to a pair of medieval ice skates—even an elephant’s tooth. As one of Europe’s oldest capit...

How do living things change their environments?

Think about your day, from when you wake up, to where you spend your day, to your bedtime routine at night. Crash Course Kids asks, "What pieces of it are a result of human intervention? Where did these pieces come fr...

The 12 Days of Evolution – It’s Okay to Be Smart

Joe Hanson of It's Okay To Be Smart celebrates the diversity of life with 12 days of videos dedicated to explaining evolution and natural selection. Above: What is evolution, anyway? From Berkeley’s Understanding ...

How to paint with ice skates, a light painting beginner’s guide

This tutorial for light painting is a great introduction for how long exposure photographs capture motion, and change the amount of light in an image. At-Bristol Science Centre's Heather Nichol explains how to modify ...

General relativity & why GPS wouldn’t work if we didn’t know about it

General relativity, what Albert Einstein said was the happiest thought of his life, basically expands upon the idea that "the laws of physics are the same everywhere". Light and gravity behave in the same way for you....

Paleoartist John Gurche reconstructs the face of Homo naledi

Paleoartist John Gurche is known for his award-winning reconstructions of our ancient human ancestors. His process of mixing forensic accuracy with emotional realism has been featured in documentaries by National Geog...

Weather vs. Climate + Severe Weather – Crash Course Kids

Weather vs. climate... are they the same thing? In this episode of Crash Course Kids, Sabrina Cruz explains the differences: Weather refers to the day to day conditions of where you are on the planet. Climate refers t...

The Door – A poem by Miroslav Holub

From filmmakers Enrique Serrano and Ricardo Serrano, this is The Door, a poem by Czech poet and immunologist Miroslav Holub. Go and open the door. Maybe outside there’s a tree, or a wood, a garden, or a magic city....

Ferrolic – A ferrofluid clock prototype by Zelf Koelman

Watch ferromagnetic fluid travel across a blank surface like living creatures: undulating forward, dancing rhythmically, blobbing together in organic shapes to digitally display the current time. Ferrolic, a ferroflui...

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...

Emoji Science with Bill Nye the Science Guy

Have you ever found an idea in science to be confusing and said, "I wish I had some emoji around to help make this information more clear." Well, look no further because Bill Nye the Science Guy has teamed up with GE ...

An Object at Rest: A stone’s adventure through time

An Object at Rest is Seth Boyden's final thesis film at CalArts. He writes: This year's story follows the life of a stone as he travels over the course of millions of years, facing nature's greatest obstacle: human...

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...

A Briefer History of Time: How tech changes us in unexpected ways

Have you ever gone camping where you wake and sleep with the sun and moon? Have you played outside all morning, only coming in when you get hungry for lunch? What was life like before we could measure time? How have c...

TateShots: Yayoi Kusama’s Obliteration Room

Yayoi Kusama's Obliteration Room is one of the more visually memorable collaborative museum projects in recent memory. Within it, children are invited to cover the white surfaces with dot stickers -- from the walls, t...

Why Do Rivers Curve? – MinuteEarth

"...All it takes to turn a straight stretch of river into a bendy one, is a little disturbance and a lot of time, and in nature there's plenty of both." In this Minute Earth episode, narrated by science writer Emily E...

The Amazing Life of Sand – Deep Look

There’s a story in every grain of sand: tales of life and death, fire and water. If you scooped up a handful of sand from every beach, you'd have a history of the world sifting through your fingers. From mountain boul...

Joni Mitchell: The Circle Game

From the Canadian Broadcasting Corporation's The Way It Is television program, this is Joni Mitchell singing The Circle Game in 1968, a favorite with the kiddos in our house. Start the video from the beginning to see ...

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