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88%VideoJul 2011

Aurora borealis explained

Also known as the northern lights, the aurora borealis is a spectacular natural light show high in the skies above the Arctic Circle. An almost identical display occurs simultaneously over the Antarctic Circle called the aurora australis or southern lights.

88%VideoJul 2011

DJ Sures introduces his Wall-E robot

(5:23) Built using the EZ-B Robot controller and the EZ-Builder robot control software. For information on how to build your own Wall-E, visit:

88%AnimationAug 2011

US debt crisis explained

(5:13) A clear overview of the US debt crisis and how it affects the rest of the world. Prepare for the first ever global economic collapse.


88%AnimationJan 2012

What is ACTA?

(6:32) ACTA is an international trade agreement currently being negotiated by the EU, US, Japan, Canada, South Korea, Australia as well as a few other countries, whose aim is to enforce copyright and tackle counterfeited goods, hence its acronym: Anti-Counterfeiting Trade Agreement.


88%VideoJun 2012

Sauber F1 Team cutaway race car

(5:06) Guided tour of the internals of an F1 car by chief designer for Sauber F1 Team Matt Morris. Mexican F1 driver Sergio Perez is also on hand to demonstrate the seating position.


88%VideoNov 2012

14-year-old girl invents solar-powered water purifier

(5:19) 14-year-old Deepika Kurup was named "America's Top Young Scientist" for her solar-powered water purification jug.


88%VideoDec 2013

Gravity visualised

(9:58) Physics teacher at Los Gatos High School in California shows how gravity works using a lycra trampoline and some balls.

88%VideoMay 2015

How does fusion power the sun?

(1:59) One of the most violent reactions in the universe, nuclear fusion, is what powers the sun. But how does it work?

88%VideoOct 2015

How do wind turbines work?

(5:28) From blade design to Betz's limit, there's more to a wind turbine than you might think.

88%VideoNov 2015

The mechanical techno of Graham Dunning

(6:04) Graham Dunning demonstrates some of techniques he uses to create tracks.