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What is Color?

Adults Physics Science
Have you ever wondered what color is? In this first installment of a series on light, Colm Kelleher describes the physics behind colors-- why the colors we see are related to the period of motion and the frequency of waves.

Despicable Me 2 - In theaters July 3

Adults Film Marketing
Gru is recruited by the Anti-Villain League to help deal with a powerful new super criminal.

Nik Wallenda Survives Insane Grand Canyon Tightrope Crossing

Adults Life Sports
Daredevil Nik Wallenda crossed an offshoot of the Grand Canyon on a tightrope Sunday. Watch the spine-tingling videos of his stunt here.

How Long (Part 3)

Adults Grammar Smrt Live
Mark describes the difference between for and since when discussing duration with the present perfect tenses. This video is for students at a pre-intermediate level.

How to Make Mayonnaise - Gordon Ramsay

Adults Creativity Food
Gordon Ramsay shows how to make mayonnaise. His great recipe filmed for the Cookalong Live programme.

The World's First Cloud Texting Enabled Raspberry Pi Powered Espresso Machine

Adults Creativity Food Software Engineering
This is a video featuring the first ever Raspberry Pi powered espresso machine.

How Long (Part 2)

Adults Grammar Smrt Live
Mark explains how to use the present perfect simple and present perfect continuous to describe duration of unfinished activities. This video is for students at a pre-intermediate level.

The effects of DBS on the motor symptoms of Parkinson's Disease

Adults Biotechnology Health
Andrew was diagnosed with Early Onset Parkinson's Disease in 2009 when he was 35 years old. He lives with his wife and two children in Auckland, New Zealand. In November 2012 and February 2013 he underwent a surgical procedure, Deep Brain Stimulation surgery, to help control his motor symptoms.

Danny MacAskill's Imaginate

Adults Creativity Sports
Two years in the making, street trials rider Danny MacAskill releases his brand new riding film. Whilst previous projects have focused on locations and journeys, MacAskill's Imaginate sees Danny take a completely different approach to riding. Enter Danny's mind and enjoy.

How Long (Part 1)

Adults Grammar Smrt Live
Mark explains how to use the present perfect tenses to describe duration. This video is for students at a pre-intermediate level.

Killer Cone Snails

Adults Animals Nature
You'd think a snail wouldn't be much threat in the sea, but the cone snail proves deadly to unsuspecting fish.

Teaching our puppy Pacino how to catch

Adults Pets Education
Teaching our puppy Pacino how to catch...it's going to take some work!

Have To (Part 3)

Adults Grammar Smrt Live
Mark gives more information about have to as well as the meaning and use of have got to. This video is for students at a pre-intermediate level.

The JET Bicycle - The most dangerous unsafe bike EVER

Adults Internet Culture Transportation
An old womans bike built for shopping turned into a bomb inspired safety hazzard. This is the final part in my series on the wonderfull pulse jet and what an end.

Raffaello D'Andrea: The astounding athletic power of quadcopters

Adults Gadgets Sports Technology
In a robot lab at TEDGlobal, Raffaello D'Andrea demos his flying quadcopters: robots that think like athletes, solving physical problems with algorithms that help them learn. In a series of nifty demos, D'Andrea show drones that play catch, balance and make decisions together -- and watch out for an I-want-this-now demo of Kinect-controlled quads.

Have To (Part 1)

Adults Grammar Smrt Live
Mark explains how to create sentences using have to. This video is for students at a pre-intermediate level.

Face-Off With a Deadly Predator

Adults Animals Nature
Paul Nicklen describes his most amazing experience as a National Geographic photographer - coming face-to-face with one of Antarctica's most vicious predators.

This Is the End Official International Trailer

Adults Film Marketing
While attending a party at James Franco's house, Seth Rogen, Jay Baruchel and many other celebrities are faced with the apocalypse.

Wish and Hope

Adults Grammar Smrt Live
Learn the meaning and usage of both wish and hope in English. This lesson is for students at a pre-intermediate level.

30-Story Building Built In 15 Days (Time Lapse)

Adults Construction Productivity
What can you accomplish in 360 hours? The Chinese sustainable building company, Broad Group, has achieved another impossible feat - building a 30-story tall hotel in 360 hours.

Gee Atherton gets hunted by a Peregrine Falcon

Adults Animals Human Sports
Downhill mountain bike legend, Gee Atherton, is hunted by the fastest bird in the world, a peregrine falcon. Set in the epic landscape of Antur Stiniog, North Wales, Gee is tested in the ultimate experiment between man and bird.