Topic: water

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What is surface tension? Ask a water strider.

Modern technologies like high speed cameras can allow us to see what was previously 'invisible' to the naked eye. This clip from Richard Hammond's Invisible Worlds provides two memorable slow motion examples: A speedy...

What’s the right way to wash your hands?

Handwashing is an easy and effective way to avoid catching the common cold or a seasonal flu. But not using enough soap or washing your hands too quickly might not get rid of all of the germs—bacteria, viruses, fungi,...

Gitanjali Rao: Finding solutions to real problems

Colorado seventh-grader Gitanjali Rao wants to find solutions to real problems, so when she learned about the water crisis in Flint, Michigan on the news, she wanted to help. From Rookie Mag: After coming across a...

Float by Susi Sie

Bubbles and droplets of oil in water slowly float around as if in space until... plink! They pop together. Or pop apart? Float is an award-winning 2011 film by Susi Sie with music and sound design by Thomas Schuessler...

Watercolor, gouache, acrylics, a paint comparison

Why might you pick watercolor paints or acrylics or gouache? What techniques can you use when painting with each kind of binding option for your pigments? In this paint comparison video, Germany-based artist and YouTu...

What is fire? Is it a solid, a liquid, or a gas?

Sitting around a campfire, you can feel its heat, smell the woody smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could stare at the bright flames forever as they twi...

Is it impossible to skip a stone 89 times?

"Skipping a stone might seem like a simple thing, but it's actually this beautifully complex mix of skill, athleticism, and fascinating physics." And in what might be one of the more comprehensive stone skipping video...

Exploration Mission-1: Testing 2 million liters of water

Watch two million liters (450,000 gallons) of water explode 30 meters (100 feet) into the air onto Launch Pad 39B at Florida's Kennedy Space Center. This is the successful October 15, 2018 test of NASA's Ignition Over...

How are tomatoes grown and harvested?

Plum-style tomatoes are grown and harvested in California, where 95% of America's processing tomatoes are grown. The process in the term 'processing' is a combination of tomato type—plum tomatoes are low on seeds and ...

Glaciers flow like rivers, a time lapse

Though they look solid and still, gigantic compressed masses of ice called glaciers flow, constantly moving like rivers. In this Secret Life of Ice clip, we see their awe-inspiring shifting with help from a time-lapse...

Can ice on Europa and Enceladus help us find extraterrestrial life?

In the late 1990s, photographs from the Galileo spacecraft showed an ice-covered surface on Europa, one of the Galilean moons orbiting Jupiter. In early 2018, studies of the data reported that "giant jets of water are...

Is climate change making hurricanes worse?

"So the important thing to understand about hurricanes is that they only form over warm water. Think of warm water as a fuel to the engine that is a hurricane. The hurricane forms when warm air over the ocean rises. A...

How do garden eels eat?

Alexandra Khrizman and colleagues at the Hebrew University of Jerusalem and Tel Aviv University made more than 100 dives and planted cameras among garden eels to determine how they handle currents, and whether being s...

Flamingos swim with stingrays in their hydrotherapy session

When flamingos need some exercise and pain relief for arthritic knees, hydrotherapy—swimming in a pool for physical therapy—can do the trick. Columbus Zoo and Aquarium zookeepers take Martini and excited flamingo budd...

Stilt fishing in Sri Lanka

Anura Wijewikrama fishes two hours each morning and two hours each evening. And like his grandfather and father before him, he does so on handmade stilts driven into the sand. He is one of the few still carrying on th...

Hydrophytes, 4D-printed aquatic ‘plants’ for the future

Tentacles wiggle. Filaments expand. Tails spiral. Looking like coral polyps, sea pens, crustaceans, and other colorful aquatic lifeforms, these multi-material 3D printed 'plants' come alive. Triggered by air that's pu...

The Ocean Cleanup technology and challenges explained

The Great Pacific garbage patch in the northern Pacific ocean holds an estimated 1.8 trillion hard-to-see pieces of plastic that float around on or just below the water's surface. They're kept swirling in an area that...

Geothermal energy in Iceland

Iceland is a geothermal energy pioneer. Their unique geology, thanks to volcanism along a rift in the Eurasian tectonic plate and North American tectonic plate, provides a sustainable advantage: Heat from the ground. ...

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