Closed as a salt mine in 1932, the site of Salina Turda has been in use since antiquity. Now, it is an amusement park. ➡ Subscribehttp://bit.ly/NatGeoSubscribe' target='_blank' rel='nofollow'>Subscribe About National Geographic:...

A Chinese saying goes, "There's no pleasure in eating without meat." And the data backs that up: every year, China consumes 26 percent of the world's meat and 45 percent of its seafood — numbers that could grow alongside rising incomes....

Explore the thrilling world of roller coasters with Mac Lesggy as he discovers how these exhilarating rides stay safely on track while delivering adrenaline-pumping experiences. Learn about the engineering that keeps the rides secure...

Learn about Neil Armstrong, from his childhood in Ohio and his interest in airplanes to his missions in the Korean War and his time as a test pilot, to the Gemini and Apollo 11 missions.

In this video, the teacher explains the physics behind roller coasters and how engineers design and build them. Topics covered include gravitational potential energy, kinetic energy, conservation of energy, friction, acceleration, and...

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...