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Topic: science
The powder that can turn sludge into clean drinking water
When people don't have access to clean drinking water, they can become ill or worse from water-borne bacteria and viruses, disease-causing microorganisms, and other pollutants. In DRINKING NASTY SWAMP WATER (to save t...
Beaver dams and wildfire, a stop-motion demonstration
How do beaver dams change and improve their ecosystems and build climate resilience? This stop-motion short by ecohydrologist Emily Fairfax demonstrates how beaver dams slow down and store water in ponds, creating wet...
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...
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...
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 ...
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...
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...
Magnetic fields revealed in slow motion
There are scientific toys and tools that can easily reveal the magnetic fields around a magnet—we've even made this DIY black sand version. But what does it look like when you bounce a powerful neodymium magnet and m...
Did an asteroid kill the dinosaurs?
Around 66 million years ago, all non-avian dinosaurs went extinct. Was the culprit a 6-mile wide asteroid that collided with Earth? Or did other factors contribute to the dinosaurs’ die-off? Paleontologist Aki Watanab...
Perijove 16: Passing Jupiter
Set to Jupiter, the Bringer of Jollity, one of the seven movements in Gustav Holst's 1916-ish orchestral suite entitled The Planets, Op. 32, this is what it's like for NASA's Juno spacecraft to zoom by the largest pla...
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...
Soil 101
What is soil made of? Why is it important? And how can we nurture soil for the benefit of humans and our ecosystems? Learn about soil with the help of Soil 101, a 2015 animation from the Food and Agriculture Organizat...
Electrified Pickle
"The first thing to realize is that when you pickle something you put it into a mixture of salt and vinegar. Salt contains ions, sodium ions, chloride ions, and salt solution is electrically conducting, but it's not v...
Mycelium packaging, a biodegradable alternative to styrofoam
Styrofoam makes up 25% of our landfills in the U.S. That is insane. We may only use it for a day or a week to ship a package, but it stays in our environment for thousands of years. I think I've come up with an altern...
A brie(f) history of cheese
Before empires and royalty, before pottery and writing, before metal tools and weapons – there was cheese. As early as 8000 BCE, Neolithic farmers began a legacy of cheesemaking almost as old as civilization. Today, t...
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