This video English lesson looks at idioms and expressions associated with the word hammer. Idioms can be tricky for students to learn, but through the use of appropriate visual imagery, this video helps students to quickly learn and use...

NADH Dehydrogenase

In this video, we will look at the chemistry behind the production of iron from iron ore. In early Earth history, iron, like all other metals, would have been found as an element in the crust of the planet. Later when plants evolved that...

Host Gugulethu Zuma-Ncube introduces the unusual yet fascinating forms of ethnographic African currencies; from personal adornments such as beads, shells, jewelry and even massive iron forms weighing as much as 100 pounds, to the...

This video provides an overview of Mars, the fourth planet from the Sun. It highlights key facts such as its diameter, mass, moons, and orbit period. The video also explains the origin of Mars' name, its association with the God of War,...

It describes sources and types of waste. It also describes the methods of waste disposal.

This video covers English language for things we do in and around our homes. It introduces the use of "let's," simple words, and expressions.

Something mysterious is going on at the Sun. In defiance of all logic, its atmosphere gets much, much hotter the farther it stretches from the Sun’s blazing surface. Temperatures in the corona — the Sun’s outer atmosphere — spike to 3...

MOT 1952: JONES AND LAUGHLIN STEEL COMPANY: VS Jones & Laughlin steel mill along the Monongahela River (the Mon), coal going through the coking process in furnace, various factory workers working in mill. Coke, J&L Coal

The video talks about corrosion and its prevention methods. The video explains that water and oxygen are needed for rusting and demonstrates an experiment to investigate rusting. The video also discusses various methods of preventing...

Fort Jefferson Preservation

The video discusses displacement reactions and their relation to the reactivity series. The presenter gives examples of experiments involving metals and non-metals and explains how the more reactive metal will displace the less reactive...

You may have heard that carbon is the element of life. What does that mean? Let's find out!

Are you unsure about how to pronounce "iron man"?? In this video I give you the British and American pronunciations of iron, irony and ironic. Many people learning English find it difficult to pronounce "iron". It's normally just because...

Learn the basics about Testing for positive ions - part 2. Find out more in this video!

London Bridges falling down! This is a great song that kids like to sing and dance too. This song has a catchy tune and chorus.

NASA scientist Emily Wilson discusses her work developing miniaturized instruments that measure greenhouse gases in the atmosphere. Her latest instrument, the mini-LHR, works in tandem with AERONET, and will contribute to the global...

Explore how gemstones get their colors. We learn that gemstones absorb and reflect certain light waves based on their chemical structures, resulting in different colors. Some gemstones are self-colored, while others are colored by...

In most schools in America, we are taught that "European diseases" killed off the indigenous peoples of the New World. But what about Africa and Asia? Why weren't they affected?

Hybrid apps are changing the way people build mobile applications. With Ionic 2, hybrid app developers are gifted with not only a fresh, well-built, and powerful platform, but also a tool to enjoy their development experience. Apps can...

Upon viewing the Magnets and Electromagnets video series, students will be able to do the following: Define a magnet as a material that attracts iron and materials containing iron. Explain that magnets have a north pole and a south pole...

Have you ever wondered what happens when you bring a magnet near 5000 degree molten Iron? Does it attract? Or repel? Maybe it create cool shapes. But most importantly... DOES IT EXPLODE?! I set off thermite over a very large and...

CYP2E1 Mechanism Part 2: Conversion of Ethandiol to Acetate

What was West Africa like before the Europeans arrival? How did the empires grow, flourish and eventually decline? West Africa Before the Europeans, Part 1