A ride through the mountains and canyons with the mammoths proves chaotic for the Islanders when they experience the effects of sound reverberation. Brenda’s echoes startle the mammoths who run in every which way. Nevertheless, Brenda and co. make the most of their lesson and use the principles of SOUND to return the hairy beasts back to safety.

Gregg Wallace joins a human production line in the largest sports shoe factory in the UK to see how they produce three-and-a-half thousand pairs of trainers every 24 hours by sewing 32 million individual stiches and using 140 miles of thread. Meanwhile, Cherry Healey gets hands on in a tannery to help them process thousands of rawhides into finished leather for the nation's shoes, and finds out how a ballet shoe company painstakingly turns 37,000...

Host Emily Calandrelli speaks to experts who are learning everything they can about asteroids and their potential impact on earth. From the dinosaur killer to the Chelyabinsk meteor of 2013 - we learn about the destructive power of asteroids. Emily takes a trip to the Ames Vertical Gun Range for an experiment that predicts impact size on the moon and the Earth. Emily also travels to Seattle Washington to meet a company that has a plan to profit from...

In this video, three young people talk about their work in business administration including education, skills needed, challenges, and what they enjoy about their jobs. Arden received on-the-job training before starting his own IT systems company from his bedroom. As a video game producer, Tom works with each department from conception through manufacturing. Glen discusses the business aspect of video game development.

The Internet was invented during the Cold War and launched in 1969. Yet it wasn't made for the public. In fact, it was developed for the army to communicate quickly and secretly so that no spies could intercept and no bombs could disrupt the sharing of information. It was nothing like what we know today. This program takes a look at the history of the Internet, the 1972 introduction of electronic mail, and the launch of the World Wide Web. Nobody...

This episode of Modern Marvels examines points of failure in ultraslow motion. We examine the effects of crashes on cars, trucks, and the crash-test dummies inside. Underwriter's Laboratories fire rounds at bulletproof glass until it breaks, and we discover how long it will take experts to breach a safe using more and more powerful tools. Arizona State University experiments to find the breaking points of steel, concrete, and even Kevlar jet engine...

The invention pioneered by Elvira Fortunato, Rodrigo Martins and their team at New University of Lisbon, consists of transistors crafted from cellulose fiber – in other words paper exploited for electronics purposes. The paper-based transistors open new applications for low cost and disposable electronics, require much less energy to manufacture, are made from readily available materials, and can be recycled safely as opposed to the standard silicon...

For two years, we have followed the construction of the new California Department of Transportation headquarters in LA to learn the architectural, structural, and mechanical challenges of building mega-skyscrapers.

Are the days of Dairy Farmers being tied to the farm set to become a thing of the past with the help of robots? With milk quotas due to be lifted in 2015, farmers will need all the help they can get and Teagasc are examining the viability of robotic milking systems for Irish farms. Robotic milking is a voluntary milking system, which allows cows to present themselves for milking as they wish without the presence of the farmer. Each cow is fitted with...

In this episode of Scientific American Frontiers, Alan Alda visits the research labs and testing tracks of the Big Three auto makers to find out what people will be driving 10-20 years from now. Fuel efficiency and alternative fuels are the future, and Alda test-drives a gasoline-electric hybrid that's already on the road, as well as several hydrogen-fueled cars still in development. The search for a quiet, fast, safe, exciting and non-polluting fuel-cell...