Topic: water

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Why do autumn leaves cause train delays? – Liz Bonnin

Why do 'leaves on the line' cause train delays, especially in autumn? The serious danger comes from a series of physics challenges: Leaves are sucked onto the tracks by the fast moving trains. The train wheels crush t...

How Do Trees Transport Water from Roots to Leaves?

Travel through a part of the water cycle that we don't often think about: Water's journey from the roots of a Douglas fir, upward through hair-thin fibers within the trunk, reaching the tree's photosynthesizing needle...

Can Namib Desert beetles help us solve our drought problems?

Can we pull enough water out of the air to sustain drought-stricken places around the planet? It might help to Think Like A Tree... or a Namib Desert Beetle called the Stenocara gracilipes, who harvests water from the...

Hot & Cold Water Science Experiment – HooplaKidzLab

With two matching jars, red and blue food coloring, some hot and cold water, an index card, and a dish or baking pan, you can observe how the different densities of hot and cold water behave. This experiment by Hoopla...

The Inverted Glass Harp

We love glass harps – instruments made from wine glasses that are filled with different amounts of water to create a series of desired pitches. In The Inverted Glass Harp, Dan Quinn shows us that empty glasses can als...

Adding color & fizz to floating water bubbles in microgravity

When you're floating water bubbles in microgravity on the International Space Station, be sure to add a gas-releasing effervescent tablet and some food coloring, and don't forget to film it in 4K resolution. Astron...

Nebula – A mysterious encounter in the mountains

Created by seven co-directors -- Camille André, Marion Bulot, Clément Doranlo, Myriam Fourati, Jonghyun Jungboix, Alexis Kerjosse, Sarah Simon -- all students from Gobelins L'École de L'Image, this is Nebula, a beauti...

The 2014 Stone Skipping World Record – Kurt Steiner’s 88 skips

On September 6, 2013 in Pennsylvania's Allegheny National Forest, Kurt Steiner achieved the Guinness World Record for "the most consecutive skips of a stone on water" when his skipping stone touched the water 88 times...

Oregon’s Lost Lake drains down a lava tube every spring

Every spring in Oregon's Willamette National Forest, Lost Lake begins to drain down naturally occurring lava tubes. A six foot wide lava tube hole was featured in this 2015 video from The Bulletin, which notes, "The w...

Surfing the ‘World’s Heaviest Waves’ – Teahupo’o, Tahiti by drone

Watch top surfers ride the French Polynesian waves just off the coast of Tahiti's Teahupo’o, reportedly pronounced 'cho-po' by surfers and 'tear-hoo-poh-oh' by locals. With massive swells, heavy boat traffic, and shar...

A vortex of bubbles twirls pufferfish as cold & warm waters collide

A vortex of bubbles forms like a lasso in the waters off the coast of Socorro Island, where cold California currents collide with warm equatorial waters. It's a seasonal phenomenon in Mexico's "little Galápagos", appr...

How to Make a Cloud in Your Mouth – Physics Girl

To make a cloud in your mouth -- yes, this is a very cool trick that actually works with practice -- you'll need to make tiny water droplets in your mouth. Then up the pressure. Physics Girl Dianna Cowern demonstrates...

For sea otters, lounging around is the key to conserving energy

Sea otters are not only known for being adorable, but also for a lack of blubber to help keep them warm. Because they live in water that’s far too cold for their bodies, sea otters not only rely on their super fantast...

Shade balls roll into the LA Reservoir to prevent water evaporation

How do you keep your recycled water from evaporating during a state-wide drought? Shade balls. On August 10, 2015, Los Angeles Mayor Eric Garcetti joined the LA Department of Water and Power to roll 20,000 black, 4-in...

Sea fans, barracuda & a giant clam in 4K – Earth Touch

Yellowtail barracuda, a giant clam, a sea cucumber, scorpionfish, gorgonian sea fans, and more: Earth Touch takes us underwater to Phi-Phi National Marine Reserve's Bida Nok in the Andaman Sea, Thailand. Beautiful, fu...

What is Fire? – It’s Okay to Be Smart

That glowing light, those information-filled colors, that smoke and vapor that seems to magically light warm embers... What kind of physics and chemistry are at work inside of a flame? Joe Hanson from It's Okay to Be ...

The world’s longest inflatable waterslide is 1/3 of a mile long

Thing that exists: a 1,975-foot-long slip 'n slide -- that's 1/3 of a mile -- at Action Park in New Jersey. With a GoPro attached to his head, a park employee slid along what is now the world's longest inflatable wate...

Gyrecraft – Transforming sea plastics into valuable objects

From Azusa Murakami and Alexander Groves of Studio Swine, this is Gyrecraft, a term that references the swirling gyres in which micro-plastics can be found, and scrimshaw craft, the now verboten pastime of whale tooth...