A team of researchers have found evidence that the Mayans had managed to build a sophisticated water purification system in Tikal — over 2,000 years ago.
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According to the lead researcher, Kenneth Tankersley of the...

This song about Metric length goes over only MM, CM, M, and KM for students who are at grade levels that don't cover all of the metric prefixes.

This video is answering the question of what are sand dunes.

In this animation, we examine the phrase, "You are what you eat". It's a phrase used around the world and throughout history, but how much scientific truth is there to back this statement up?

This video explores the fear and cultural symbolism surrounding spiders, debunking common misconceptions about their venom and highlighting their important role in controlling insect populations. It also discusses the potential medical...

In this episode, we learn about: an app designed to detect depression, walking efficiency and how babies learn from being surprised. We also explore how high-tech tools are helping researchers better understand how granular materials...

This week we speak to collaborating artists Mariam Ghani and Erin Ellen Kelly at the Indianapolis Museum of Art, and learn about their approach to learning about and working with landscapes.

Salt Flat, Bolivia part 1/3: The video explores the phenomenon of salt flats, specifically the Salada Uni in Bolivia, and the community of salt farmers who rely on it for their livelihood. It showcases the process of harvesting salt and...

Jitu Brown, National Director of the Journey for Justice Alliance (J4J) is a long-time community organizer born on Chicago’s south side. He is a product of Chicago’s public school system and is a proud parent and husband. Jitu...

Use physics to create cool patterns on a vibrating plate. How is this like a guitar string or a singing wine glass?

Glass is made by heating sand (mostly composed of silicon dioxide) until it melts and turns into a liquid at a high temperature of around 1700° Celsius. When the molten sand is allowed to cool, it becomes an amorphous solid, featuring...

The sun is shining, the waves are rolling in, the sandy beach is calling. It’s the perfect day for finding and collecting seashells! Join in the hunt, as a little boy and his mother share a fun day of digging in the sand and exploring...

This video provides a comprehensive overview of storms, explaining their definition, potential effects, measurement on the Beaufort scale, and different types. Learn about snowstorms, tropical cyclones, windstorms, and more. Understand...

Explain the smelting process of aluminium. How is spent pot lining used after aluminium has been smelted? Explain how bauxite is refined.<br/>
Smelting And Refining Aluminium, Part 2

Not everybody has the equipment to melt aluminum, but pewters low melting point makes metal-casting available to everybody! Its melting point is so low, you can melt it in your kitchen.



Pewter is mostly tin, with a little...

Mining is the process of extracting valuable materials from the Earth's surface, such as metals, coal, and gemstones. It has been practiced since ancient times and has played a crucial role in the development of civilizations. However,...

This video discusses the alarming issue of sand extraction from the Mekong River in Cambodia. The high demand for sand has led to environmental degradation, including the loss of wetlands and collapsing riverbanks. The video highlights...

Pirate Bella and Pirate Beans need your help to find their missing treasure: 10 Green Bottles. Help them to solve clues, then use the treasure map to find all of the missing bottles and put them back in the treasure chest. This will...

In this video, the teacher explains how to find the volume of a cone by comparing it to a cylinder. The formula for volume of a cone is derived as one third of the volume of a cylinder with the same base area and height. The teacher also...

From its role as a key element to its applications in technology and everyday products, silicon proves to be a versatile and essential component. Discover how silicon is used in semiconductors, solar panels, glass, pottery, personal care...

Este programa de video de acción en vivo es sobre la palabra erosión. El programa está diseñado para reforzar y apoyar la comprensión y retención del estudiante de la palabra mediante el uso de secuencias de video, fotografías, diagramas...

This live-action video program is about concrete. The program is designed to reinforce and support a student's comprehension and retention of the term through use of video footage, photographs, diagrams and colorful, animated graphics...

Ozymandias is a narrative sonnet about a traveler who found a broken statue of Ozymandias in the dessert. While initially quite confusing, the the poem shows Percy Shelley at his best: bringing low the ambitious dictators of the world.

Not all waves travel across the ocean or across the universe. Some are stuck in a certain spot! Like the vibrations of the strings on a guitar. What's the deal with these standing waves? And what's this, quantization? Oh my! We'd better...