On Your BehalfEpisodes Episode guide
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Asteroid Threat
Will the earth be one day hit by an asteroid with disastrous effect?
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Round the World by Hot Air Balloon
Why have all attempts to fly around the world in a hot air balloon ended in failure?
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Emergency Hovercrafts
Why aren't hovercrafts used to provide relief supplies after hurricanes?
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Satellites and the Ozone Layer
Does sending rockets and satellites into space add to the depletion of the ozone layer?
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Cricket or Baseball?
Why, as English speaking nations, don't America and Canada play cricket?
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The Mysteries of the Titanic
Why didn't nearby ships come to the aid of the Titanic?
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The MV Stirling Castle
What is the meaning and origin of the phrase "choc-a-bloc"?
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Nuclear Weapons
Are India and Pakistan bluffing about having nuclear weapons?
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Snoring
Why does the British £2 coin have an inscription about giants?
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Australian Maoris
Why didn't Maoris go to Australia? What are the origins of the Rolls Royce flying lady?
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The Cuckoo
How do cuckoos learn to sing? Can water-damaged books be restored?
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The Big Bang
What existed before the Big Bang? What caused apes to mutate into Homo sapiens?
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Pollution Free Engine
Is the ceremonial bugle call, the Last Post, unique to Britain?
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Longest Place Name
Why does Britain compete as one team in the Olympics but as four teams in the World Cup?
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Handshakes
Why and when did humans start shaking hands? Do humans only use 10% of their brains?
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Radio Waves
Why does lightning sometimes look green? Why don't insects drown when it rains?
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Landmines
What is the best way to clear landmines? How accurate was Mayan astronomy?
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Dollar Signs
What is the origin of the US dollar symbol?
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Grapefruit Diets
Does eating grapefruit shrink your stomach? What language did Jesus speak?
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The Purpose of Mosquitoes
Do mosquitoes have an ecological purpose? Did ancient Egyptians brew beer?
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Dow Jones Index
Do ships really disappear in the Bermuda Triangle?
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Best Man
Has another planet been found in our solar system? What makes a proper poem?
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Crop Circles
Are crop circles magical, meteorological, or man-made?
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Yagan's Head
What happened to the head of the Aboriginal warrior Yagan?
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Rotating Planets
Why does everything in space rotate on its own axis?
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Radio Jamming
Is it possible to develop lung cancer from passive smoking?
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El Nino
What causes the weather phenomenon called El Nino?
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Tic-Tac Men
Why are counter staff in banks called tellers? What is sudden adult death syndrome?
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Romans Maths
How did Romans do maths with their numerical system?
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The Big Bang
Was there anything before the Big Bang?

