History's first empire rose out of a hot, dry landscape, without rainfall to nourish crops, without trees or stones for building. In spite of all this, its inhabitants built the world's first cities, with monumental architecture and...

In this video Paul Andersen explains the nature of science. He describes how science is a way of knowing about the natural world. Scientists develop investigations to gather evidence and make explanations about how the natural world...

Paul Andersen describes the macromolecules that make up living organisms. He starts with a brief description of organic chemistry and the importance of functional groups. He also covers both dehydration and hydrolysis in...

Though the TV show Community has never achieved huge ratings, it has a passionate cult following, including us here at Idea Channel. The show plays with genre and narrative in such a creative way that it brings to mind the cultural and...

Around 20 years ago NASA launched a spacecraft to study the comet Wild-2. What it brought back would cause scientists to wonder whether the building blocks of life could have arrived at Earth on a comet.

In which John covers the long, long history of ancient Egypt, including the Old, Middle and New Kingdoms, and even a couple of intermediate periods. Learn about mummies, pharaohs, pyramids and the Nile with John Green.

Reading slowly -- with her finger running beneath the words, even when she was taught not to -- has led Jacqueline Woodson to a life of writing books to be savored. In a lyrical talk, she invites us to slow down and appreciate stories...

New ReviewFrom an ancient sound illusion to a symbol of unity, researchers have proposed dozens of theories for why the mysterious megaliths were erected at Stonehenge 5,000 years ago.

New ReviewGuitar World's Pete Emery tests the Manson META Series MBM-2H Sustainiac - the latest version of Muse frontman, Matt Bellamy's affordable signature guitars.

The Continental Army encamped at Valley Forge during the winter of 1777-78 and came out a formidable. Visit Valley Forge National Historical Park to walk these hallowed grounds.

Welcome back to the Fluctus Channel, where we explore how rustic narrow-gauge trains, used in sugarcane plantations across Asia, transport millions of tons of sugarcane, shaping both local communities and historic railways. Fluctus is a...

Discover how a renter added tons of storage in her 290-square-foot studio apartment with $300 (and only a few tears).

The Tigris River drying up has revealed some amazing discoveries! As the water receded, it uncovered ancient cities and artifacts that were hidden for centuries. Archeologists found old structures, pottery, and even cuneiform tablets...

This video explores how motte and bailey castles helped William I consolidate his conquest of England, looking at Windsor Castle as an example.

In this video we hear about the character of William the Conqueror, as described in the Anglo-Saxon Chronicle.

Welcome back to the Fluctus Channel, as we discover how the AH-64 Apache stands as the world’s most proven attack helicopter, combining firepower, agility, and cutting-edge avionics.



Fluctus is a website and YouTube...

Things Other Countries Do Totally Differently!

Welcome back to the Fluctus Channel, as we explore A-10 Warthog’s close air support missions and B-2 Spirit’s stealth operations.



Fluctus is a website and YouTube channel dedicated to sea geeks. Whenever you are...

Watch Out For Dubai's Artificial Island

Turin is the capital of the Piedmont region and an important business and cultural center in northern Italy. Explore the city's origins as a Roman municipality, whose ancient influence can still be seen in the chessboard-grid layout of...

This video provides an introduction to Node.js.

In this video, we will cover dependency injection.

In this video, we will have a quick introduction to this section’s learning objective.

The Duomo, or Florence Cathedral, is one of the greatest architectural achievements of the Renaissance. Its massive red-brick dome, designed by Filippo Brunelleschi, changed the course of architecture forever. Built over centuries, the...