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Walk

Doctor Knowles and Professor McCork get to the bottom of life's questions. McCork and Knowles ask 'How long would it take to walk the Earth?'.


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-HOWLING AND MOANING

-Day five - I can barely remember

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the last time I spoke to another human being.

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Wow, Colin is really embracing this wilderness survival thing.

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I'm so impressed. Confronting your fears is never an easy thing to do.

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Out here in the wild, there could be snakes, mountain lions,

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-flies, dogs, rabbits...

-HE GASPS

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What was that?

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Be brave, Jonathan. Be brave.

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-BELL RINGS

-Well, the show must go on.

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We are going live, Professor.

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Hey, wait for me!

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ANNOUNCER: This is...

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With...

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..the floor manager.

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And...

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Stand by!

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Come on, everybody!

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-BOTH:

-It's time for...

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Today, we are asking...

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Did you know that the Earth isn't perfectly round?

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In fact, its circumference is around 67km less measured vertically,

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going through the poles, than it is around the equator.

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I always thought it was flat.

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So tell us, Dr Knowles, how long would it take to walk around

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this not-quite-round Earth of yours?

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If we allow for eight hours' rest per day,

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walk only in a straight line

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and assume a constant speed of about 5km per hour,

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it would take a person about 500 days to walk the distance of

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the Earth's equator.

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Hmm. But that doesn't take into account mountains,

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deserts, oceans, jungles...

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I'm not sure if it's possible to

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accurately calculate this one, Professor.

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Here's an idea.

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Why don't we take a quick break while Dr Knowles figures out

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a better way of answering the question? Heh!

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HOWLING

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Whatever is out there, whatever is making that noise,

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it's planning to have me for dinner.

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-Oooooh!

-Owwwww!

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-Oogie-boogie-boogie-boogie.

-Ow-owww!

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Ms Hucklebuck, can we stop doing this now?

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My arms are really tired.

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Yes, I think that just about covers frights and terrors in the wild.

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You can stop now.

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-Yes, nailed it.

-BELL RINGS

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Ooh! Positions, everyone!

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So tell us, Dr Knowles, if there were

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no mountains or barriers or anything, and if you never

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needed to take a rest, how long would it take to walk the Earth?

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Well, in this hypothetical situation,

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and assuming a constant speed, it would take an average human

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around 335 days to walk

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the Earth's equator. Just under a year.

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At the speed of a crawling baby,

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it would take two years and four months.

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But that seems fast compared to the giant tortoise,

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which would take over 76 years to complete the journey.

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Dr Knowles, I wonder what

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the fastest way to go around the Earth would be.

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Based on top speed alone, the fastest way to travel around

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the Earth would be in a North American X-15 rocket plane

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in just over five-and-a-half hours.

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PLANE ENGINE ROARS

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See you next time!

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And we are clear.

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OK, Colin. Training's over.

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You can come out now.

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Yes! Civilisation at last!

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Well done, Jonathan.

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You scored full marks

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on wilderness survival training level one.

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Level one?

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Oh, Colin, you are going to love level two -

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a three-day hike to Monster Mountain.

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-Raaaaar!

-Ahhh!

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I-I-I-I think I've reached my desired wilderness level for now,

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thank you very much. B-B-Bye-bye.

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Oh, dear, I hope we didn't scare him too much.

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Maybe level two could just be camping in the back garden.

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Or sleeping with the lights off.

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Good idea. One step at a time.

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Professor McCork and Doctor Knowles ask 'How long would it take to walk the Earth?'. Meanwhile, the normally fearful Colin embarks on a solo Wilderness Survival Challenge. Things could get very creepy...