Topic: water

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Earth’s Hydrosphere and Geosphere + Weathering and Erosion

How do the geosphere and hydrosphere interact and work together? How do water and dirt work together to support life on Earth? In this episode of Crash Course Kids, Sabrina Cruz explains how rain, waterfalls, rivers, ...

NASA’s Opportunity Rover completes its mission on Mars

From its landing on Mars on January 24, 2004 to the mission's end, announced on February 13, 2019, NASA's Opportunity rover has been a wonder of space exploration. For almost 15 years, the golf-cart-size explorer trek...

How to build with different mud recipes

Dirt, sand, straw, clay, and water. Mixed and packed together in different combinations, these materials can create incredibly sturdy shelters and structures. In this video from The Nito Project, artist builder Benito...

Swimming with the whale sharks of Isla Mujeres

A whale shark (Rhincodon typus) feeds on bonito eggs just off the Yucatan peninsula in this video from underwater camera operator and filmmaker Simon Spear of View from the Blue Productions. Whale sharks, the planet's...

Harvesting water from thin air

Can we harvest water from landscapes that are famous for their arid climate? Evelyn Wang and Omar Yaghi, from Massachusetts Institute of Technology (MIT) and the University of California, Berkeley respectively, create...

How do ocean currents work?

In 1992, a cargo ship carrying bath toys got caught in a storm. Shipping containers washed overboard, and the waves swept 28,000 rubber ducks and other toys into the North Pacific. But they didn’t stick together -- th...

Baby flying foxes in Australia’s urban parks

Caring for sick, injured, and baby flying foxes is all in a day's (and night's) work for Fauna Rescue of South Australia. In this BBC Earth video from Cities: Nature's New Wild, Fauna Rescue caregivers talk about how ...

Why is water one of the weirdest things in the universe?

Every molecule of water on the Earth and inside you or any other living thing has existed for billions of years. After it came to Earth, that water has been cycling through rocks, air, animals, plants, and back again....

Don’t extinguish a metal fire with water

How do you extinguish burning magnesium? In this video from the Royal Institution, science presenter Steve Mould demonstrates what happens when you try to extinguish a metal fire with a CO2 fire extinguisher or water—...

What are mosasaurs?

Travel back to the Cretaceous period, where large marine lizards called mosasaurs dominated ecosystems around the planet. While some were the size of a dolphin, others were longer than a Tyrannosaurus rex. How did the...

Making lava bombs with ‘homemade’ magma

Hot lava + cold water = the potential for lava bombs, flying molten rock balls. For scientists who study the dynamics of this violent combination, it's much safer to set up controlled experiments than to study it in H...

The Big City, a microscopic tour of Vancouver

From high above planet Earth, humans can seem microscopically small. Busy highways and crowded cities, seen from far away, can quickly remind us of bustling ant hills filled with a colony of millions. Conversely, if y...

How to make Reindeer Rockets

If you want to study the physics of flying reindeer (and make a super fun mess in the process), make Reindeer Rockets. Maddie Moate and Greg Foot combine small plastic bottles with sports caps, some Alka-Seltzer or fi...

The Green Dragontail Butterfly in slow motion

This stunning slow-motion footage of the Green Dragontail Butterfly (Lamproptera meges) was filmed by insect enthusiast Kazuo Unno during a trip to northern Thailand. The dragontails are a species of swallowtail butte...

This humidity-powered seed drills itself into the ground

Powered by changes in humidity—curling when dry and straightening when wet—this Erodium cicutarium seed (or more specifically, an achene) will bury itself by slowly drilling into the ground. This time lapse video by p...

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...

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