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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 are coins made at The Royal Mint?

How are coins pressed from shiny discs of malleable metal at The Royal Mint? Nickel-brass alloy, graphite, sulfuric acid, ball bearings, heat, water, and a factory full of machines prepare these blanks before engraved...

What did a baby T-Rex look like?

What did a baby T-Rex look like? And what evidence do we have to help figure that out? In preparation for T. rex: The Ultimate Predator, an American Museum of Natural History exhibition, AMNH experts used cutting-edge...

Lifecycle of a Chinese Luna Moth

Follow the growth of the Chinese Luna Moth (Actias dubernardi) from egg, to caterpillar, to cocoon, to adult. This calmly-paced, 16-minute video covers approximately 70–85 days of development, filmed by insect YouTube...

Smash and Grab, a Pixar Sparkshorts film

In Smash and Grab, an action-packed, sci-fi Sparkshorts film from Pixar, two robots work diligently to power the engine car of a locomotive. Together, they make the best of the grind, until one discovers that there ar...

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...

The tooth-billed hummingbird’s combat moves

When it comes to nectar, the hummingbird is notorious for its highly competitive nature. "Their high-energy lifestyle compels hummingbirds to locate reliable food resources" and then to defend them once found. In the ...

What’s the dirtiest place in your home?

Think of the dust, the hidden ants and spiders, or the potential molds, fungi, and bacteria that can be in any household. Is the dirtiest place in your home under your bed? On doorknobs? In the dishwashing sponge? In ...

Stop-motion Paper Mario

Paper Mario, but with actual paper. Hand-drawn in a notebook and animated with stop-motion, Nintendo fan Kisaragi Hutae 6 recreates a scene from Mario's side-scrolling quest in Super Mario Bros, complete with sound ef...

Mental Logs number sticks, a math magic trick

Ask someone to mix these Mental Logs number sticks up in any combination. Can you figure out the total in your head more quickly than they can add the numbers on a calculator? Yes. In fact, you can probably tell them ...

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...

Will there ever be a mile-high skyscraper?

In 1956, architect Frank Lloyd Wright proposed a mile-high skyscraper, a building five times as high as the Eiffel Tower. While this massive tower was never built, today bigger and bigger buildings are going up around...

Matthew Henson’s historic expedition to the North Pole

Six men on dog sledges are in the record books for being the first to reach the geographic North Pole on April 6, 1909: Four Inuit guides named Egingwah, Ooqueah, Ootah, and Seeglo, and two long-time partners in explo...

From zygote to hatched larva, a cell division time lapse

Dividing and dividing again over a three week time period, a zygote transforms into a larva in this extraordinary six-minute video. It's a mix of time lapse and real-time footage from Dutch filmmaker Jan van IJken, ...

In search of the elusive ladybird spider

The female is a velvety blue-black. The male looks a bit more like its namesake. These are ladybird spiders (Eresus sandaliatus). The elusive, raisin-sized spider was once thought to have been extinct, but UK-based co...

Aurora Australis in the polar night sky

As of 2018, astrophysicist Robert Schwarz has spent eight winters in a row at the Amundsen–Scott South Pole Station, 14 in total, where he works as a Cosmic Microwave Background (CMB) observatory operator and technici...

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