Topic: science

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Why do ice cubes crack in drinks?

Here's an easy experiment: Take ice straight from the freezer and drop it in a glass of water. Listen and watch for the crack. Why does it do that? Professor Martyn Poliakoff of the Periodic Table of Videos team e...

Testing Fireworks

How do you know that the fireworks you've made are going to burst in the sky as expected? Test them! In this episode of I Didn't Know That, visit one of the UK's leading fireworks manufacturers as they test the compon...

The Solar Do-Nothing Machine by Charles and Ray Eames

Designed by husband and wife team Charles and Ray Eames, this is the Solar Do-Nothing Machine, a whimsy-maker of sorts, but also "one of the first devices to convert solar energy to electricity. The Eames office asked...

The Quest for Sea Ice: Swimming with polar bears and a camera

Follow a group of four polar bears as they swim in search of ice. Arctic Bear Productions filmmaker Adam Ravetch captured this footage by attaching a camera to one of the four animals. The big paws, the sun on the hor...

Testing a Space Rover Under Alaskan Ice

Someday it may be possible to explore below the icy surface of Jupiter's sixth-closest moon, Europa, and if this happens, it could be done with a technological descendant of this robotic rover: NASA JPL's Buoyant Rove...

Made with Code: Limor Fried and Erica Kochi

Adafruit's Limor Fried talks about why writing code is "like being able to write your own story in technology." As one of many women in science, tech, engineering, and math (STEM) careers, she's featured as a part of ...

How a locomotive works: GE Masterclass with Baratunde Thurston

In this promotional video series from General Electric, GE Masterclass with Baratunde Thurston, we go behind the scenes of GE's Global Research Center to explore engineering marvels, like how a freight locomotive work...

Fossil hunting in unexplored dinosaur country

This is what it's like to be a paleontologist out in the field, from waking at dawn's first light, to digging in the rocks, to wrapping or jacketing finds, to gathering around the campfire, exhausted and covered with ...

It’s Okay to Be Smart – The Cycle: Carbon and Oxygen and You

From PBS Digital Studios and Joe Hanson of It's Okay to Be Smart, this is The Cycle: Carbon and Oxygen and You, a visualized explanation for what happens when we breathe. And here it is explained: via It's Oka...

Paralyzed Woman Controls Robotic Arm With Thoughts

When Cathy Hutchinson controlled a robotic arm using a small sensor planted in her brain, it was a remarkable breakthrough in neurobiology and computer science. The sensor would recognize patterns or signals from her ...

Watch a time lapse sunset through a solar telescope

Seeing the sun set can already be a breathtaking experience, but observing the sun with a solar telescope reveals incredible details — such as sunspots and solar filaments — that we could never safely see ...

Spiders Tune Their Webs Like A Guitar

Much more than just a net to catch prey, spider webs can transmit lots of information about what has been caught or what might be visiting. Oxford researchers have recently discovered that the strands of silk vibrate ...

Collecting the deep sea animals of Monterey Submarine Canyon

Go behind-the-scenes with Stephanie Bush, postdoctoral fellow and expert on deep-sea cephalopods, as she dives down into Monterey Submarine Canyon via a ROV (remotely operated vehicle) camera. Her team is collecting s...

The Cornell Lab of Ornithology’s Bird Song Hero

How can you train your brain to recognize and remember bird songs? The All About Bird Biology team at the Cornell Lab of Ornithology has come up with a way to visualize bird vocalizations: Bird Song Hero. Want to test...

Landing on a comet with Rosetta Spacecraft

This has never been done before: the European Space Agency (ESA) is about to land a spacecraft onto the surface of a comet. Launched in 2004, the Rosetta spacecraft will reach 67P/Churyumov-Gerasimenko in August 2014,...

Circuit Playground: D is for Diode

D is for Diode! Protector of circuits and the D in LEDs, learn how diodes work in this episode of Circuit Playground, featuring engineer Amanda “W0z” Wozniak and ADABOT.

The difference between weather and climate change

Dr. Neil deGrasse Tyson, astrophysicist and host of StarTalk and Cosmos: A Spacetime Odyssey, demonstrates the difference between weather and climate change as he walks along the beach with a dog.  Weather is ...

Modular, self-assembling robots from EPFL and MIT

"Furniture that changes functionality completely depending on the needs of the person..." Like life-size LEGO pieces, these robot modules can gyrate and reconfigure in order to create furniture or move furniture in an...