This video guides you with a 3D model of a typical HVAC heating system of an office building to help you understand how a building is heated and what is does with the heat. We include photographs of how the items look in real life and...

Industrial heat exchangers explained, learn the different types of heat exchangers used and how they work with examples.

In this video, we're going to talk about the circulating pump, why it's important and what circulating pumps are used for.<b<br/>r/>

Circulating pump and heating pumps explained. In this video we look at circulating pumps used in hot water and heating systems to understand the main parts as well as how they work. We cover applications of circulating pumps, why...

“Let’s Talk about Opposites” defines antonyms and gives many examples.

Let's learn some useful English idioms that are commonly used by native English speakers. <br/>
Download your F<a href='https://englishlikeanative.activehost...' target='_blank' rel='<b<br/>r/>nofollow'>worksheet</a>n worksheet

See what it’s like to get stung by the world’s most venomous fish, the Stonefish! In this video I'm back in Australia to show you where stonefish live, how they defend themselves with venomous spines and then I will test the venom on...

This video is answering the question of how old is geothermal energy.

“Idioms, Adages, and Proverbs” is a video that explains the meanings of common idioms, adages, and proverbs.

“Heating Systems” explores four major heating systems used today and explains how each functions.

The American Woman who Survived Stalin's Gulags | Soviet Union, Stalinism, Great Purges

This video explores five fun facts about renewable energy.

Cooling Towers: Although there are several different types of cooling towers, for the most part they share certain common components and operations. What we’ll do here is go through the basic process of how a cooling tower works,...

This video discusses different methods of generating electricity and the energy transfers that take place in each of those methods. The processes covered include the generation of electricity from fossil fuels, from the energy stored in...

Solar cogeneration combines a photovoltaic and thermal module to provide electricity and hot water. Traditional PV systems convert about 15 percent of solar energy into electricity, with the remaining energy wasted. Solar cogeneration...

Solar power and wind power are the two most promising options of how power will be provided in the future. Technology is improving all the time. We are on the brink of a renewable energy revolution. And nowhere is the need for renewable...

Joel Walker and Linda Spuler, NASA’s Johnson Space Center director of center operations and emergency manager, respectively, describe the daily tasks involved in running a space center and how we prepare for and respond to scenarios like...

Felting soap is fun, beautiful, and useful! Learn how to wet felt and needle felting on soap using this tutorial.

Many companies are making "net-zero" pledges, while others are setting less ambitious but more clearly defined goals. Chief sustainability officers from IBM and Walmart Inc. evaluate the merits of different approaches.

This video explores five fun facts about Renewable Energy.

This video tutorial demonstrates the process of canning sardines, highlighting the importance of using a pressure canner to safely preserve low-acid foods like fish. The tutorial covers the entire canning process, from preparing the...

This video is a lecture presentation on the emission and absorption of infrared radiation or IR. The presenter walks the viewer through an experiment to compare the effectiveness of four different surfaces as emitters of infrared...

Born together, the Spirit and Opportunity twin rovers followed divergent paths after they landed on opposite sides of Mars. Opportunity’s journey was marked by good fortune, while Spirit’s was troubled from the start.

Geothermal energy uses hot water and steam from deep underground to drive turbines. Radioactive decay of substances like uranium heats up rocks, which may heat water that rises as steam. In some places there may be hot rocks but no...