Imagine a world without the Eiffel Tower, The Statue of Liberty or The Colosseum' Well, that's a world that almost existed. Alltime 10s brings you 10 stories of how close we came to losing some of the planet's most iconic tourist...

Asphalt has been a useful water-proofing and construction material for thousands of years. It is a black and sticky substance commonly used to build roads and highways today. Learn about the properties and uses of asphalt.

Learn the basics about how metals are used, such as gold, copper, aluminium, steel. Where can we find these materials in our day to day world? Find out more in this video!

The United States is a nation of immigrants. European immigrants in the late 1800s populated our nation and were granted citizenship upon entry. The immigration system has changed dramatically since, and America’s borders are no longer...

This video discusses the problem of water scarcity and provides various measures that can be taken to address it, such as wise and judicious use of water, recycling and reusing water, and introducing efficient irrigation practices. The...

Many think of the Victorian era as a time of tight-laced corsets and formal teas. And it was—but it was also the time of the Great Stink, a two-month stretch of 1858 in which London's primary water source, the River Thames, was so full...

It’s hard for those of us in the modern era to grasp the true horror of the Chernobyl disaster. Even a deep dive into the Chernobyl meltdown timeline can only reveal so much about the very real, visceral consequences of the event....

In this video we give a detailed breakdown of Limestone and what the different uses of Limestone are.

It’s a super fun Vehicles Song for children! Sing along and learn the names of the construction vehicles: police car, bus, truck, bulldozer, crane, ambulance, fire truck, ice cream truck, excavator, dump truck, forklift, monster truck....

The video discusses Howard Gardner's theory of nine types of intelligence and provides examples of each type through a hypothetical scenario of building a bridge. The types include picture smart, nature smart, number smart, people smart,...

How can a building define a city? A look at London's "Gherkin" designed by Sir Norman Foster will give us some insight.

The Great Pyramid – the largest of several Egyptian pyramids found at Giza – is the only surviving wonder of the ancient world. With such a fantastical past, it has long been debated how those pyramids were built without the help of...

Check out the "easy" future tense, combined with an introduction to adverbs. This is part 2 in the series: 'Advanced Spanish: Verb Tenses'.