Mr. Andersen details the history of modern atomic theory.

Hank talks about the last major way humans are impacting the environment in this penultimate episode of Crash Course Ecology. Pollution takes many forms - from the simplest piece of litter to the more complex endocrine distruptors - and...

Stories of discovery and invention often begin with a problem that needs solving. Summoned by the king to investigate a suspicious goldsmith, the early Greek mathematician Archimedes stumbles on the principle that would make him famous.

In this video Paul Andersen explains how the resistivity of a material opposes the flow of charge. Conductors (like metal) will have a low resistivity and insulators will have a high resistivity. Semiconductors will have a moderate...

In this video Paul Andersen explains how elements and molecules are made of atoms. In a pure sample of a pure substance the average mass remains the same. If more than one atom is found in a molecule the ration of average masses remains...

New ReviewFrance’s per capita gross domestic product might be lower than that of the US by more than a third, but the state provides significant subsidies for education, health care, transportation, and childcare. French salaries are higher than...

New ReviewAlong with Pretoria, Johannesburg is a commercial and financial center located in the Gauteng province. With more than 7 million people, it’s the largest city in South Africa. After gold was discovered in the area in 1886, immigrants...

New ReviewSouth Africa offers a variety of well-stocked stores and malls in the urban centers, which are filled with a wide range of goods from around the world. South Africa has a growing mall culture including places like Sandton City outside of...

New ReviewThe Knowes of Trotty Poem – Bronze Age Grave Goods

Holiday Kids_ Mardi Gras V1-0002

In the 1850s, gold was discovered in Australia, setting off a wave of immigration, opportunity, and dramatic change. People from around the world rushed to the goldfields, hoping to strike it rich. The gold rush helped transform...

A video about the trade relationship between Asia and Africa. This video discusses Great Zimbabwe.

Learn more about the gold strike in California and the gold rush that followed. Learn about the prospectors ("49ers") who traveled to California from all over the world to try and strike it rich.

Howcast - Let professional makeup artist Patricia Longo teach you how to achieve a Bollywood look in this makeup tutorial from Howcast.

Howcast - Learn how to use bronzer from professional makeup artist Michelle Dittrich in this Howcast makeup tutorial.

Howcast - Let professional makeup artist Patricia Longo teach you how to apply gold eye shadow in this eye makeup tutorial from Howcast.

Howcast - Learn the English words for colors in this Howcast ESL video with English teacher Megan Brach.

Howcast - Learn how to get drag queen eyes and eyebrows in this Howcast Halloween makeup tutorial with artist Kenneth Llambelis.

Howcast - Discover how to learn a cheer more easily from UCA instructor Ashley Cowan of Varsity.com in this Howcast video.

Howcast - Check out part 2 of this Call of Juarez: The Cartel walkthrough and beat Chapter 13 with this online demo.

Howcast - Learn what solder is from expert Jeff Koskulics in this Howcast video.

Howcast - Learn how to make Minecraft armor with this gameplay tutorial.

Howcast - Learn how to make a Minecraft shovel with this gameplay tutorial. Learn the shovel recipe, and how a shovel works in Minecraft survival mode.

Howcast - Learn how to make a Minecraft pickaxe with this gameplay tutorial. Learn the pickaxe recipe, and how a pickaxe works in Minecraft survival mode.