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The secret belowground life of newborn meerkat pups

The sweet cooing, chirping sounds, the small furry faces, the incredibly intimate view that we don't often... ever... get to see. Via the BBC's Earth Unplugged and Animals with Cameras, specifically a wild Kalahari me...

How To Make a Hexaflexagon: The Definitive Guide

How do you make a hexaflexagon in under a minute from any long scrap of paper without scissors, tape, or glue? 'Mathemusician' Vi Hart is well-known for her love of hexaflexagons, hexagonal flat paper models that can ...

How are pencil sharpeners made?

Each part of a small 'prism' or 'pocket' pencil sharpener is cut, shaped, stamped, baked, bathed, polished, and assembled with such specifically made machinery, traveling through feeds and funnels along the way. See h...

How do birds learn to sing?

A brown thrasher knows a thousand songs. A wood thrush can sing two pitches at once. A mockingbird can match the sounds around it — including car alarms. These are just a few of the 4,000 species of songbirds. How do ...

Smashing stuff with neodymium magnets

What happens to a cluster of grapes when it's in between two large, very strong and potentially dangerous neodymium magnets as they collide? Science presenter Kevin Delaney and his team demonstrate the power of these ...

Koi are unusual kitchen helpers in the kabata of Harie, Japan

For over 300 years, the village of Harie (針江) in Japan has thrived on its interconnected system of mountains, canals, streams, rice fields, spring water, and kabata, small separate rooms that are used as a kitchen s...

How traditional Nabulsi soap is handmade in the Toukan Soap factory

In the city of Nablus in the West Bank, workers at the Toukan Soap factory make natural soap by hand. The family-owned company is "the oldest survivor of this once-prominent industry," one of the two remaining soap fa...

An innovative edible spoon, a smart alternative to plastic waste

Plastic cutlery has been around for years, widely considered the only choice for cheap, disposable cutlery. Knowing the threat plastic poses to our environment and health, Narayana Peesapaty created a tasty and nutrit...

The rise and fall of the Inca empire

It was the western hemisphere's largest empire ever, with a population of nearly 10 million subjects. Yet within 100 years of its rise in the fifteenth century, the Inca Empire would be no more. What happened? With...

How to make homemade slide whistles

Bamboo, PVC pipe, wood, or even a carrot! Slide whistles can be made from all sorts of materials, and are fun to make, play, and learn physics with. In this episode of Homemade Science, teacher Bruce Yeany shares his ...

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