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I Didn't Know That
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Nobody does documentaries better than National Geographic Channel. Everything is covered - from how we live to where we live, to all that's around us. With exclusive video podcasts their programmes are offering you even more, from behind the scenes footage to specially shot scenes and interviews. And now you don't have to be in front of your TV to enjoy it.
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Crop Circles
891 views
September 25, 2007
Johnny Quicksand
420 views
September 25, 2007
Green DIY Energy-cycle illuminating pedal-power
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most recent
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Crop Circles
from I Didn't Know That on September 25, 2007
891 views / likes
An extra-terrestrial I Didn't Know That investigation probes the mysterious forces crafting paranormal patterns in our crop fields. Your mind will boggle at what can be achieved with a bit of wood and a measuring tape.
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Concrete Bomb
from I Didn't Know That on September 25, 2007
315 views / likes
Richard and Jonny explode back onto your screen with their most spectacular experiment yet. They're comparing the effectiveness and collateral damage of concrete compared to conventional explosives when used in an aerial bomb and the results will blow you away.
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Johnny Quicksand
from I Didn't Know That on September 25, 2007
420 views / likes
Do not try this at home or anywhere else you find sand, water and unpredictable tides. Jonny goes to frightening lengths and depths to find out once and for all whether a person could really drown in quicksand, sparking a dramatic rescue operations.
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Huge Home Savings
from I Didn't Know That on May 23, 2007
372 views / likes
Green guru Joanna Yarrow shows Richard and Jonny how simple changes in the home can save the environment ? and enough cash for a lavish holiday.
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Green Grand Prix
from I Didn't Know That on May 23, 2007
318 views / likes
Industrial scientists Richard and Jonny race four different green cars to see which lasts the longest on just £1 of fuel in the tank.
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Rockets & Lies
from I Didn't Know That on May 15, 2007
414 views / likes
Launching into more exciting experiments, Richard and Jonny reveal how a simple stick led to a revolution in rocketry. Also ? another urban myth is put to the test as Jonny tries all the tricks in an attempt to cheat a lie detector.
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Mail & Martial Arts
from I Didn't Know That on May 04, 2007
354 views / likes
How machines can read the worst writing ... and in a stark demonstration of mind over matter, Richard attempts to break bricks with his bare hands after just one lesson from a Kung-fu master.
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Snipers & Supermarkets
from I Didn't Know That on April 26, 2007
429 views / likes
Can a sniper really hit a target more than a mile away with a single bullet? Plus: Richard and Jonny have supermarkets in their sights; how big shops are secretly snaring us into spending more...
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