Topic: science

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Raindrops: What do they really look like?

When you draw raindrops, how do you draw them? Are they tear-shaped with the point at their tops? Is that really what raindrops look like? Dr. Joe Hanson asked that very question. He then tested what happened to water...

Cooling without polluting: Two new green air conditioning innovations

The starry night sky seems remarkably distant from the topic of air conditioning, but it’s revolutionizing the field in quite an unexpected way. In this episode of "The Spark," watch how scientists from across the glo...

Hawk moths and The Art of Staying Stable

Like a hummingbird or a creature from a Hayao Miyazaki film, hawk moths or Sphingidae, are a family of large insects with the magical-looking mastery of hovering in midair. They can also fly backward and keep incredib...

How to make a rocket

"What's the best scientific formula for a powerful rocket with oxidizer and fuel?" In this video clip from Bang Goes The Theory Series 5, via BBC Earth Lab, we get a quick peek at the mix of chemistry and physics that...

Four levels of chocolate chip cookies: From amateur to food scientist

Learn a few professional tips of what to do (and maybe what not to do) when baking this classic: Chocolate chip cookies. Amateur baker Alina, home cook Lorenzo, and Penny, a professional chef, demonstrate how they mak...

Which life form really dominates Earth?

In 2018, there are around 7.6 billion people on the planet, but weigh us all together on a giant scale and we only make up 1/10,000 of Earth’s biomass. What is biomass? And what life forms dominate the rest of the pla...

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...

The NASA-JPL engineers behind Mars InSight & MarCO

NASA-JPL's Mars InSight robotic lander is scheduled to touch down on Mars on November 26th, 2018 after a six-month voyage. Its mission: Gather data on the Red Planet's interior structure and help us better understand ...

Fabulous Food Chains and The Dirt on Decomposers

Everyone eats, right? But how does that food get the energy to power you? In this episode of Crash Course Kids, Sabrina talks about the way energy moves, or flows, through an ecosystem and how that movement forms Food...

The Meissner Effect: How to levitate a neodymium magnet

A neodymium magnet cube sits on a surface of yttrium barium copper oxide—YBa2Cu3O7, nicknamed YBCO—inside the bottom of a styrofoam cup. A small amount of liquid nitrogen is poured slowly over the YBCO. As it cools, t...

Microworld Unseen: SEM images of the Pale Grass Blue butterfly

Everyday objects and life forms, magnified hundreds, thousands, even tens of thousands times, what would you see? That's what we want to show in Microworld Unseen, a new project from Beauty of Science, in which we use...

What happens to balloon animals in liquid nitrogen?

How can you fit a bunch of balloon animals into a small container? Add some liquid nitrogen into the mix, as demonstrated in this video by Real Physics Live, the YouTube channel for Texas A&M University's Department o...

Soil Life in Action: Bioturbation with and without soil fauna

Bioturbation is the mixing of (plant) residues into soils and sediments by biotic activity. It is one of the fundamental processes in ecology, as it stimulates decomposition, creates habitats for other (micro)fauna an...

A ladybug life cycle time lapse

Bright yellow eggs sit attached to a branch. Though they're vulnerable to predators (including their hatching siblings), many eggs will yield larvae that will go through metamorphosis and turn into ladybugs (coccinell...

Neil deGrasse Tyson tests ‘the world’s smartest dog’

Chaser the Border Collie can identify over 1022 toys. In 2011, astrophysicist and NOVA ScienceNOW host Neil deGrasse Tyson visited with Chaser and her owner, psychology professor Dr. John W. Pilley, to test her memory...

A colorful Chladni pattern demonstration

Watch as Chladni patterns form on a metal plate, a teaching demonstration "spiced up" with colored sand by associate professor of physics at UNC Charlotte skullsinthestars. The video is accompanied by Prelude from Sui...

A LRO moon visualization set to Clair de Lune

This visualization attempts to capture the mood of Claude Debussy's best-known composition, Clair de Lune (moonlight in French). The piece was published in 1905 as the third of four movements in the composer's Suite B...

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