0:00:35 > 0:00:37I'll never forget that holiday, Nan,
0:00:37 > 0:00:40cos that was the one where you won the beach surfing competition
0:00:40 > 0:00:43and then you went on to win the Glamorous Granny Cage Fighting.
0:00:43 > 0:00:47It was just astonishing. Ah, well, happy memories.
0:00:47 > 0:00:51Right, let's get back to the lab. Cheers, Nan. See you soon. Oh, dear.
0:00:51 > 0:00:54Hello, I'm Richard Hammond and this is my Blast Lab.
0:00:54 > 0:00:56CHEERING AND APPLAUSE
0:00:57 > 0:01:02Nice to see you all. My laboratory is like a great big fun theme park,
0:01:02 > 0:01:06except, instead of roller coasters, I've got vats of radioactive goo
0:01:06 > 0:01:09and there's no souvenir shop. Joining me on a fun-packed ride
0:01:09 > 0:01:12will be two teams conducting scientific experiments
0:01:12 > 0:01:15in order to try and win some fantastic prizes.
0:01:15 > 0:01:19Coming up, Oliver's fact-free diet is going badly,
0:01:19 > 0:01:21which is great news for us, in Fact Nav 2.0.
0:01:27 > 0:01:31We shall be bending light around corners in Mini Science.
0:01:36 > 0:01:39It's man versus machine versus bird of prey
0:01:39 > 0:01:43in a race to get an urgent message to my lab rat before it's too late.
0:01:46 > 0:01:51And then, the bridge that can decide your destiny. It's... What is it?
0:01:51 > 0:01:53Oh, yeah, the Bridge Of Destiny!
0:01:54 > 0:01:56The Bridge of Destiny!
0:02:00 > 0:02:02To ensure that my Blast Lab stays a secret,
0:02:02 > 0:02:05I've employed someone who, when it comes to fighting,
0:02:05 > 0:02:06is cooking on gas.
0:02:06 > 0:02:09That's because she's still a bit sceptical about electric hobs.
0:02:09 > 0:02:11It is my Ninja Nan!
0:02:19 > 0:02:22Let's have a look in the Nannex, see what she's up to.
0:02:22 > 0:02:26She's still talking to the postman. Poor guy's been there over an hour.
0:02:26 > 0:02:30He thinks he's being interrogated. She calls it having a nice chat.
0:02:30 > 0:02:32Let's see who's trying to get into my lab today.
0:02:39 > 0:02:41Right, you lot claim to be the Red Team, do you?
0:02:41 > 0:02:45OK, for security purposes, we shall have to check that out.
0:02:45 > 0:02:47Identify yourselves by name.
0:02:47 > 0:02:49- Toby. - Harry.- Jessel.
0:02:49 > 0:02:53Toby, Harry, Jessel, that's what I've got written down here.
0:02:53 > 0:02:55And a talent? Jessel, what are you going to do?
0:02:55 > 0:02:56I can walk on my hands.
0:02:56 > 0:03:00OK. Well, go on then, walk on your hands.
0:03:00 > 0:03:02If you can do that I'll let you in.
0:03:02 > 0:03:03Er...
0:03:03 > 0:03:07Yeah, fair enough, that's walking on your hands. Come on into the lab.
0:03:07 > 0:03:09CHEERING AND APPLAUSE
0:03:12 > 0:03:14I'm not sure that's going to be useful
0:03:14 > 0:03:17but nice to know you can do it if you need to.
0:03:17 > 0:03:20we agreed a security password with the real Red Team.
0:03:20 > 0:03:24If you are the real Red Team, tell me what it is.
0:03:24 > 0:03:25ALL: Quad Bikes.
0:03:25 > 0:03:26That's what I've got here.
0:03:26 > 0:03:29They're what you want for Christmas? You like them?
0:03:29 > 0:03:31- We go quad-biking quite a lot. - Do you?
0:03:31 > 0:03:33Take care, they're dangerous.
0:03:33 > 0:03:36Go and get settled in ready for the first game.
0:03:39 > 0:03:41That's good, that's good. We have a Red Team.
0:03:41 > 0:03:45What we need now is a Yellow Team and these three say it's them.
0:03:50 > 0:03:52Hello, so-called Yellow Team.
0:03:52 > 0:03:56Let's find out if you really are. I've got a security file here.
0:03:56 > 0:03:59Identify yourselves by name. You are?
0:03:59 > 0:04:01- Hannah.- Frances.- Lois.
0:04:01 > 0:04:05Yeah, that's what it says here. Talent, who's going to do what?
0:04:05 > 0:04:07- I am.- What are you going to do?
0:04:07 > 0:04:10- I can do the worm. - What does that mean?
0:04:10 > 0:04:14- Shall I show you?- That's probably the best, Lois. I think it is.
0:04:14 > 0:04:15Go on, then.
0:04:15 > 0:04:19Have you started yet? She's gone. She's actually vanished!
0:04:19 > 0:04:21Oh, good Lord! Is that supposed to be happening?
0:04:21 > 0:04:24OK. Fair enough. If that's the worm, come on into the lab.
0:04:24 > 0:04:26CHEERING AND APPLAUSE
0:04:28 > 0:04:30Hello, girls, welcome to the lab.
0:04:30 > 0:04:34Well, welcome this far but not all the way into the lab yet...
0:04:34 > 0:04:39She's watching, she's watching. Keep an eye on you, Frances, don't worry.
0:04:39 > 0:04:42If you are the real Yellow Team, you would know the password
0:04:42 > 0:04:44that we've already agreed. What is it?
0:04:44 > 0:04:47- ALL: Goat.- Yes! What is that, your lunch order?
0:04:47 > 0:04:51- Why goat?- A goat ate my bag on a trip to Marwell Zoo.
0:04:51 > 0:04:54- Did it?- Yes. - They can be mean, goats.
0:04:54 > 0:04:57OK, go and get settled in and ready for the first game.
0:04:57 > 0:05:00We have both teams. Just one other thing we need.
0:05:00 > 0:05:03Here comes a vehicle that not only oozes intelligence
0:05:03 > 0:05:05but leaks brake fluid, as well.
0:05:05 > 0:05:07It is Oliver!
0:05:23 > 0:05:26OLIVER'S ENGINE REVS AND HORN TOOTS
0:05:26 > 0:05:28Oliver, welcome.
0:05:29 > 0:05:31Get him all hooked up. There you go.
0:05:31 > 0:05:32Ah, yes.
0:05:32 > 0:05:37I have installed the very latest Fact Nav 2.0 system into Oliver.
0:05:37 > 0:05:38It's brilliant!
0:05:38 > 0:05:41It contains millions, if not billions, of scientific facts.
0:05:41 > 0:05:44Fascinating stuff. Slight problem.
0:05:44 > 0:05:49I spilled some strawberry jelly into the system whilst I was fitting it.
0:05:49 > 0:05:52I know. I was utterly gutted.
0:05:52 > 0:05:54Such a waste of strawberry jelly.
0:05:54 > 0:05:57As a result, not all of the facts in there are correct.
0:05:57 > 0:05:59Teams, it's down to you to tell me
0:05:59 > 0:06:03whether the science facts I give you are true or false.
0:06:03 > 0:06:06If they are true, Oliver will do this.
0:06:06 > 0:06:08HORN TOOTS
0:06:08 > 0:06:11And if they turn out to be false, Oliver will do this.
0:06:11 > 0:06:13FOGHORN BLARES
0:06:13 > 0:06:14We play the game like this.
0:06:14 > 0:06:17On each side you will see each of you has three lights.
0:06:17 > 0:06:19For every question correctly
0:06:19 > 0:06:22we'll turn one of those lights green. Simple enough.
0:06:22 > 0:06:25The first team to get three lights lit green wins the game,
0:06:25 > 0:06:27they take a point and we move on.
0:06:27 > 0:06:29A slight twist in there.
0:06:29 > 0:06:32If you answer a question correctly you get a green light.
0:06:32 > 0:06:37If you're wrong, we light one of the other team's lights green.
0:06:37 > 0:06:39Yeah. Yellows are working that one out!
0:06:39 > 0:06:42Which means you can win the game for them.
0:06:42 > 0:06:43So, do think carefully.
0:06:43 > 0:06:45First question - very important this -
0:06:45 > 0:06:48it's a nearest-to question. Think carefully.
0:06:48 > 0:06:53The Large Hadron Collider is the largest particle accelerator
0:06:53 > 0:06:56in the world but what is its circumference?
0:06:56 > 0:06:58I'll take the answer in metres.
0:06:58 > 0:07:02Get thinking, chatting and scribbling an answer down.
0:07:02 > 0:07:05I'll give points to the team nearest the real answer.
0:07:05 > 0:07:09Yellows are ready, Reds are ready, as well.
0:07:09 > 0:07:10Time's up!
0:07:10 > 0:07:14OK, Yellows, let's have a look at what you've got.
0:07:14 > 0:07:1690 metres.
0:07:16 > 0:07:19Reds, you think the circumference is 150 metres.
0:07:19 > 0:07:25It's quite a lot bigger that number. The real answer is 26,659 metres.
0:07:25 > 0:07:28Which means the Reds, although a long way off, are nearest.
0:07:28 > 0:07:29Well done!
0:07:30 > 0:07:34I'm sorry, girls, that was really cruel.
0:07:34 > 0:07:37I'm sorry. But I only did it because it was cruel.
0:07:37 > 0:07:40Actually, it's enormous. It's got 9,300 magnets inside it,
0:07:40 > 0:07:44and is the world's largest fridge because it is cold inside!
0:07:44 > 0:07:50It's capable of firing particles at around 99.99% the speed of light,
0:07:50 > 0:07:52which is quite incredibly fast.
0:07:52 > 0:07:55Reds, you've taken control with your first green light.
0:07:55 > 0:07:58You get the first true or false question.
0:07:58 > 0:08:02And it's this - diamonds come from volcanoes.
0:08:02 > 0:08:03Is that true or false?
0:08:07 > 0:08:10So, Reds, you've had a bit of time to think about this.
0:08:10 > 0:08:14- So, do you think it's true or false? - True.
0:08:14 > 0:08:16Diamonds come from volcanoes.
0:08:16 > 0:08:18Oliver, is that true or is that false?
0:08:18 > 0:08:20- HORN TOOTS - It is true.
0:08:20 > 0:08:24That's another green light for the Reds. Well done, team.
0:08:27 > 0:08:30They're made under the Earth's surface,
0:08:30 > 0:08:33crushed together by high temperatures and pressure
0:08:33 > 0:08:35and then spewed out when the volcano erupts.
0:08:35 > 0:08:38You stand around catching them. No, you wouldn't.
0:08:38 > 0:08:43OK, Yellows, important one this. If you get it wrong, what happens?
0:08:43 > 0:08:45- They win.- Yeah. No pressure!
0:08:45 > 0:08:50No pressure at all. Right, here is your true or false science fact.
0:08:50 > 0:08:54Dolphins drink at least nine litres of water every day.
0:08:54 > 0:08:57Don't answer straight away, have a chat,
0:08:57 > 0:08:59because you never know what you might know.
0:08:59 > 0:09:02Is that true or false? Vote with your feet. Let's see.
0:09:06 > 0:09:08An audience unanimous in its decision.
0:09:08 > 0:09:10You all agree that's true.
0:09:10 > 0:09:15I think so because they live in the water, so they must drink something.
0:09:15 > 0:09:18It's a lot of water. OK. Audience, back to your places.
0:09:18 > 0:09:21Let's have a look and see what our team thinks. Yellows?
0:09:21 > 0:09:24- We think it's false. - You think it's false?- Yes.
0:09:24 > 0:09:27Dolphins don't drink at least nine litres of water a day.
0:09:27 > 0:09:31That's the Yellows' answer. OK, Oliver, they think it's false.
0:09:31 > 0:09:33Is it true or false?
0:09:33 > 0:09:36- FOGHORN BLARES - It is false. Well done, Yellows!
0:09:36 > 0:09:38Well done, you're still in the game.
0:09:40 > 0:09:43In actual fact, dolphins don't really drink at all.
0:09:43 > 0:09:46They get all the water they need from food,
0:09:46 > 0:09:50by burning the fat in their bodies. So, they don't actually gulp water.
0:09:50 > 0:09:53OK, Reds, here's your science fact.
0:09:53 > 0:09:58A coconut is not actually a nut.
0:10:03 > 0:10:06Have a think about it, Reds.
0:10:06 > 0:10:07Reds...
0:10:08 > 0:10:12..so this is critical, really, isn't it?
0:10:12 > 0:10:15A coconut is not actually a nut. Is that true or false?
0:10:15 > 0:10:18- True.- You think? Reds think it's true.
0:10:18 > 0:10:22Oliver, is it true or false?
0:10:23 > 0:10:26- HORN TOOTS - It's true. It is true.
0:10:26 > 0:10:28That's the third green light for the Reds
0:10:28 > 0:10:32They win the game and take the points. Well done, Reds.
0:10:45 > 0:10:48- CHEERING AND APPLAUSE - One-nil.
0:10:48 > 0:10:51Now, when you're operating a time machine
0:10:51 > 0:10:54there are all sorts of complex things to think about.
0:10:54 > 0:10:56Did you counter-wind the xenon spring?
0:10:56 > 0:10:59Did you re-flash the temple equilibrator?
0:10:59 > 0:11:04Did you modulate the...green things and when's lunchtime?
0:11:04 > 0:11:07Unfortunately, I was mostly thinking of the lunchtime thing
0:11:07 > 0:11:11and that's probably why when I tried to bring my old science teacher back
0:11:11 > 0:11:14she arrived through time looking like a ten-year-old.
0:11:14 > 0:11:15She is, of course, Mini Miss!
0:11:24 > 0:11:26Hello, Miss.
0:11:26 > 0:11:29Lunchtime is at 12.10pm, Richard.
0:11:29 > 0:11:31Now, please focus on the matter in hand.
0:11:31 > 0:11:33Yes, sorry, Miss. What are we doing today?
0:11:33 > 0:11:36Well, today, our teams are going to be acting like spies
0:11:36 > 0:11:42and trying to steal that painting of a Mona Ninja in a game we call...
0:11:42 > 0:11:45DEEP VOICE: The Nan Vinci Code.
0:11:45 > 0:11:47Wow! That's impossible, though,
0:11:47 > 0:11:49because the Mona Ninja is locked behind
0:11:49 > 0:11:51special Nan-proof security glass,
0:11:51 > 0:11:54so to get it out you'd have to know the security key codes.
0:11:54 > 0:11:58That's right, Richard, and the key code is written in two safe places.
0:11:58 > 0:12:02On top of the balcony and under the boats.
0:12:02 > 0:12:05Our teams are going to need to use all these bits and pieces
0:12:05 > 0:12:08they've got here to build periscopes
0:12:08 > 0:12:12in order to help them see over the balcony and under the boats.
0:12:12 > 0:12:13That's right, Richard.
0:12:13 > 0:12:16When they have each piece of code from each location,
0:12:16 > 0:12:18they need to put them together
0:12:18 > 0:12:21and use the code breaker to work out the numbers.
0:12:21 > 0:12:25Once they're sure they know the code, they hit the buzzer,
0:12:25 > 0:12:28then type in the code and see if they're right.
0:12:28 > 0:12:30First team to do so wins.
0:12:30 > 0:12:33Ah, Miss, as they're acting like spies
0:12:33 > 0:12:38and that's water with the boats in, shouldn't this game be called...
0:12:38 > 0:12:40DEEP VOICE: James Pond?
0:12:40 > 0:12:43No, and if I hear any more puns like that, Richard,
0:12:43 > 0:12:47- it'll be another detention. - Killjoy.- Pardon?- Nothing, Miss.
0:12:47 > 0:12:49Right, teams, this is quite complicated.
0:12:49 > 0:12:52A lot of thinking involved, so get settled in and ready.
0:12:52 > 0:12:55You can't look or touch any of the equipment yet
0:12:55 > 0:12:57but just have a think and a quick chat
0:12:57 > 0:13:00because what they're going to be doing... We're using light here.
0:13:00 > 0:13:04Light likes to travel in straight lines. That's what it does.
0:13:04 > 0:13:06And when you reflect it, bounce it off things,
0:13:06 > 0:13:09it bounces off at the same angle as that at which it arrived.
0:13:09 > 0:13:13They're going to use these mirrors and tubes to build periscopes,
0:13:13 > 0:13:16so that when the light comes in it bounces and bounces
0:13:16 > 0:13:18and then bounces down and into their eye
0:13:18 > 0:13:21and they can see what they couldn't otherwise.
0:13:21 > 0:13:23It is quite tricky, this, teams.
0:13:23 > 0:13:26Good luck. One-nil right now to the Reds.
0:13:26 > 0:13:30Let's see what the score is after this round. Let's go!
0:13:32 > 0:13:36Wow! Away go both teams straight to the bottom of the balcony.
0:13:36 > 0:13:40Looks like the Yellows have chosen the right mirror straight away.
0:13:40 > 0:13:44And the Reds. Both teams trying to work out the code
0:13:44 > 0:13:49to change the letters into numbers. A lot of concentration.
0:13:49 > 0:13:53Yellows straight to work on their underwater periscope.
0:13:53 > 0:13:56Oh, what's this? The reds are erasing their code.
0:14:00 > 0:14:04This time they use the correct mirror to see the letters.
0:14:05 > 0:14:08Toby has also worked out the numbers from the code.
0:14:12 > 0:14:16Meanwhile, the Yellows have their underwater periscope made
0:14:16 > 0:14:19and Lois is the first up to try it out.
0:14:19 > 0:14:21But she's looking far too low in the tank
0:14:21 > 0:14:24to see the letters on the bottom of the boat.
0:14:24 > 0:14:27Reds now constructing their underwater periscope
0:14:27 > 0:14:29but they need to be super-quick
0:14:29 > 0:14:32as Yellows are already looking in the water
0:14:32 > 0:14:36to find their second two letters of the code.
0:14:36 > 0:14:40Well, they're looking...but it doesn't seem to be working.
0:14:44 > 0:14:47Reds now have their underwater periscope made
0:14:47 > 0:14:49and they're heading to the tank.
0:14:50 > 0:14:53This is such an intense game. It's so confusing.
0:14:53 > 0:14:56The light is doing the simple thing, going in a straight line
0:14:56 > 0:14:59and bouncing off the mirrors at the same angle.
0:14:59 > 0:15:01But there's so many mirrors and different angles
0:15:01 > 0:15:04to try get the light to go where you need it to
0:15:04 > 0:15:06so you can see. This is surprisingly difficult!
0:15:06 > 0:15:10Reds now up and running and searching.
0:15:11 > 0:15:15- Yes, yes! H, C. H, C! - Unbelievable, the Reds have it!
0:15:16 > 0:15:19- I can't see anything. - Yellows still struggling
0:15:19 > 0:15:23but the Reds now breaking the code.
0:15:27 > 0:15:29But have they got it right?
0:15:30 > 0:15:35One, nine, eight, three.
0:15:35 > 0:15:37'Access granted.'
0:15:37 > 0:15:40Yes, they've done it!
0:15:40 > 0:15:42CHEERING AND APPLAUSE
0:15:43 > 0:15:47Reds, well done! My brain hurts just watching all that going on.
0:15:47 > 0:15:49That was not the easiest game,
0:15:49 > 0:15:52trying to harness the power of light to see round corners.
0:15:52 > 0:15:55That was difficult, and code-breaking as well.
0:15:55 > 0:15:58Everybody's brains aching? Mine is, just from watching.
0:15:58 > 0:16:02So, the score after that round is two-nil to the Reds. Well done!
0:16:05 > 0:16:08I'm sorry. It's difficult.
0:16:08 > 0:16:12So, we've seen how mirrors can be used to send messages round corners,
0:16:12 > 0:16:15which got me thinking. Yeah, dangerous when I do that, I know.
0:16:15 > 0:16:19But it got me thinking, what is the fastest form of communication?
0:16:19 > 0:16:23I sent my lab rats to find out, with the help of our delivery man,
0:16:23 > 0:16:24Postman Rat.
0:16:25 > 0:16:29Postman Rat thinks he is the fastest method of delivering the mail.
0:16:29 > 0:16:33We disagree. So it's time to put his claim to the test.
0:16:33 > 0:16:36We have devised an experiment to determine once and for all
0:16:36 > 0:16:39who reigns supreme in the postal delivery stakes.
0:16:41 > 0:16:44Enough chat, let's meet the competitors.
0:16:45 > 0:16:48First up, we've seen him already, it's Postman Rat.
0:16:48 > 0:16:52He lists his dislikes as dogs, rainy days
0:16:52 > 0:16:56and being bitten by wet dogs on rainy days.
0:16:56 > 0:17:00Next up, the computerised e-mail - electronic mail.
0:17:00 > 0:17:04The ideal method of keeping in touch with people across the globe
0:17:04 > 0:17:08or just sat next to you at school.
0:17:08 > 0:17:12Lastly, our very own expert, the carrier pigeon. Hang on!
0:17:12 > 0:17:15But I'm no fool and that's no pigeon.
0:17:15 > 0:17:18OK, I'm being told that the bird and our carrier pigeon
0:17:18 > 0:17:22left the blast lab aviary together but only one turned up.
0:17:22 > 0:17:25The pigeon must have escaped. Instead, we have Mike,
0:17:25 > 0:17:28who we'll call our advanced carrier pigeon.
0:17:28 > 0:17:32That's it, he's our advanced carrier pigeon.
0:17:32 > 0:17:35Each of these competitors will be given a message at the same time
0:17:35 > 0:17:41to deliver to our lab rat sat at his desk, exactly 400 metres away.
0:17:41 > 0:17:44One message will be hand-delivered by Postman Rat,
0:17:44 > 0:17:48the other will be typed in and e-mailed to his laptop
0:17:48 > 0:17:52and the third will be attached to Mike's leg and flown
0:17:52 > 0:17:55to our second bird handler, who's positioned next to the desk.
0:17:55 > 0:17:59Whoever delivers the message first wins. That's the plan.
0:17:59 > 0:18:02Let's find out more about the science involved
0:18:02 > 0:18:04before guessing who's going to win.
0:18:04 > 0:18:08Postman Rat is using the muscles in his legs to move forward,
0:18:08 > 0:18:11with the speed of about three miles an hour.
0:18:11 > 0:18:15Mike is using the flapping of his wings to create forward thrust,
0:18:15 > 0:18:20allowing him to reach speeds of up to 90mph. And the e-mail?
0:18:20 > 0:18:24Well, this can be transported at ridiculously fast speeds.
0:18:24 > 0:18:28But is typing faster than writing? Will Mike know where to go?
0:18:28 > 0:18:31And will our wireless internet stay connected
0:18:31 > 0:18:33long enough for our e-mail to be delivered?
0:18:35 > 0:18:41We've met the competitors, we know the rules, so who's going to win?
0:18:41 > 0:18:46OK, hold the experiment right there cos, well, there's a point in this.
0:18:46 > 0:18:48It can't make any difference to the score - two-nil -
0:18:48 > 0:18:53but I think, just for fun, I'm going to ask you the question.
0:18:53 > 0:18:56Which is going to win? Which is going to be fastest?
0:18:56 > 0:18:58Have a think. Have a chat.
0:19:00 > 0:19:04So, what do you reckon? Yellows, what do you think's going to happen?
0:19:04 > 0:19:06We think the bird.
0:19:06 > 0:19:08You think the bird is going to win.
0:19:08 > 0:19:10- We think the bird. - You think the bird, as well?
0:19:10 > 0:19:14So, why not the email? Why do you think that might fail?
0:19:14 > 0:19:18It's going to take quite a long time to type it.
0:19:18 > 0:19:19That's a very good point.
0:19:19 > 0:19:23My Lab Rats are not very good at that sort of thing, that's true.
0:19:23 > 0:19:25What about the Postman?
0:19:25 > 0:19:27- Because he's slow. - Yeah, he'll possibly get lost.
0:19:27 > 0:19:30Well, there's only one way to find out,
0:19:30 > 0:19:33just for fun and for a point, let's carry on with the experiment.
0:19:33 > 0:19:37OK, here comes the Lab Rat with the message that needs to be delivered,
0:19:37 > 0:19:39and the competitors have it.
0:19:39 > 0:19:44Each of them has to write down the message before they can send it.
0:19:44 > 0:19:46Oh, and Postman Rat has finished.
0:19:48 > 0:19:50And he's off!
0:19:50 > 0:19:53Will this head start be enough?
0:19:53 > 0:19:58Now, Mike has taken to the air and quickly shoots ahead of Postman Rat.
0:19:58 > 0:20:01He has a sizeable lead now, ahead of both competitors,
0:20:01 > 0:20:04especially the email rat who still hasn't entered the message.
0:20:07 > 0:20:09Oh, but what's this? Mike has gone off course!
0:20:09 > 0:20:12This could cost him the race for sure.
0:20:12 > 0:20:13The email is almost entered
0:20:13 > 0:20:16and Postman Rat is making steady progress.
0:20:16 > 0:20:18But now Mike is back on track.
0:20:18 > 0:20:21Will the message make it in time?
0:20:21 > 0:20:23Oh, the email is sent,
0:20:23 > 0:20:27and it's in the tower, transmitting.
0:20:28 > 0:20:31But the message is being passed from Mike.
0:20:31 > 0:20:33It could go either way!
0:20:33 > 0:20:36And Mike wins!
0:20:36 > 0:20:37- COMPUTER:- You've got mail.
0:20:37 > 0:20:39The email comes in second,
0:20:39 > 0:20:42and Postman Rat a pathetic third.
0:20:46 > 0:20:50So, the bird won, which means an extra point to both teams.
0:20:50 > 0:20:52Well done, Reds and Yellows!
0:20:56 > 0:20:59You need to go and get changed into your chemical protective suits.
0:20:59 > 0:21:03You'll need them for the Messy, Messy, Mess Test. 3-1 is your score,
0:21:03 > 0:21:06Reds running ahead of the Yellows.
0:21:08 > 0:21:11So, they're all good forms of communication,
0:21:11 > 0:21:14although some of them are more readily available than others.
0:21:14 > 0:21:17I wonder what that message actually said.
0:21:19 > 0:21:22Ah, your table's about to explode!
0:21:22 > 0:21:24I see, hence the run.
0:21:24 > 0:21:26Makes sense now.
0:21:36 > 0:21:39LOUD EXPLOSION
0:21:42 > 0:21:46Thank goodness for the speed of Mike. He saved the day.
0:21:50 > 0:21:52If you think that table was dangerous,
0:21:52 > 0:21:56then steer well clear of Ninja Nan's coffee table when there's cake out.
0:21:56 > 0:21:58I've got two words for you, booby trap. Be careful.
0:21:58 > 0:22:01Now, audience, can you all have a look at your watches, please?
0:22:01 > 0:22:04Can anybody tell me what it's time for?
0:22:07 > 0:22:08Oh, yeah, that was it.
0:22:08 > 0:22:12Now, today, teams, you face the Bridge of Destiny.
0:22:12 > 0:22:14DEEP VOICE: The Bridge of Destiny.
0:22:14 > 0:22:18Cool. Now you have to fish around in there,
0:22:18 > 0:22:20in that hideous gunge, to find parts of a bridge.
0:22:20 > 0:22:23Actually, I've always wanted to go in a gunge tank,
0:22:23 > 0:22:25but apparently I'm too old now.
0:22:25 > 0:22:27I can't help but feel just a bit of jealousy.
0:22:27 > 0:22:30The Bridge of Destiny.
0:22:30 > 0:22:34- No, I said "a bit of jealousy". - Sorry.
0:22:34 > 0:22:37Yeah, you're only supposed to say that when I say "Bridge of Destiny".
0:22:37 > 0:22:39The Bridge of...
0:22:39 > 0:22:41No, not now, it's too late!
0:22:41 > 0:22:45Let's move on. Your prizes, such as a Robotic Car Set, a Metal Detector
0:22:45 > 0:22:47and a Radio Controlled Spider
0:22:47 > 0:22:50need to be transported across this tank of revolting gunge,
0:22:50 > 0:22:53because if they fall in they'll either break
0:22:53 > 0:22:58or they'll mutate into piranha prizes and nibble at your toes.
0:22:58 > 0:23:01There are things in there that will do that. Try and ignore them,
0:23:01 > 0:23:03or just scream to let us know.
0:23:03 > 0:23:05You need to construct your bridge out of those pieces
0:23:05 > 0:23:07festering in the fluids around you.
0:23:07 > 0:23:10There are squeegees in there to clean it when you've finished,
0:23:10 > 0:23:13but it's up to you how much time you spend doing that, OK?
0:23:13 > 0:23:17As soon as you finish your bridge, pull the lever to release the car
0:23:17 > 0:23:20that will pull your prizes across the Bridge of Destiny.
0:23:20 > 0:23:22A bit of jealousy.
0:23:22 > 0:23:24Thank you.
0:23:24 > 0:23:27Reds you're in the lead, so you get the five-second head start.
0:23:27 > 0:23:30Yellows, you only go when you hear the siren, OK?
0:23:30 > 0:23:34This is a straight race to get your prize pods across the tank.
0:23:34 > 0:23:36And that race starts...
0:23:36 > 0:23:38now!
0:23:41 > 0:23:43Away go the Reds, searching for the kit of parts.
0:23:43 > 0:23:45KLAXON SOUNDS
0:23:45 > 0:23:47And now the Yellows follow suit.
0:23:47 > 0:23:51And look at that! The Reds have their first piece in already.
0:23:51 > 0:23:55Yellows getting some bridge pieces on the deck, as are the Reds.
0:23:55 > 0:23:58Already it's looking like a close battle, this one.
0:24:02 > 0:24:06Now the Reds look like they have all their pieces out of the gunge.
0:24:06 > 0:24:09They're just trying to work out the order they go in.
0:24:09 > 0:24:12This is great teamwork in evidence today.
0:24:12 > 0:24:14And in goes their second.
0:24:15 > 0:24:18Yellows making some progress,
0:24:18 > 0:24:21but it looks like the third piece is going in for the Reds.
0:24:23 > 0:24:24And now the fourth, too.
0:24:24 > 0:24:27I've never seen a team complete the Bridge of Destiny so quickly.
0:24:29 > 0:24:31And away goes the red car.'
0:24:40 > 0:24:43That was a clear result. The Reds successfully built their bridge.
0:24:43 > 0:24:46The Yellows struggling there with that one. It is tough.
0:24:46 > 0:24:50So, Reds, congratulations, that's a win for you. Well done, Reds!
0:24:53 > 0:24:56And while we're here, let's take a look at what you've won.
0:24:56 > 0:25:00Each of you will take home the following. Ninja Nan, are you ready?
0:25:00 > 0:25:01A metal detector,
0:25:03 > 0:25:04a chemistry set,
0:25:06 > 0:25:07a flying UFO,
0:25:09 > 0:25:11a robotic car set,
0:25:12 > 0:25:16a radio controlled spider,
0:25:16 > 0:25:17a Rough Roader,
0:25:18 > 0:25:20a transforming ball
0:25:21 > 0:25:24and a bionic 'copter. Well done, Reds!
0:25:25 > 0:25:27What a haul of prizes!
0:25:28 > 0:25:29Ha, ha, Yellows.
0:25:29 > 0:25:33The amazing thing is, they would've been exactly the same for you,
0:25:33 > 0:25:36but instead of taking those prizes home
0:25:36 > 0:25:37you're going blow them to bits,
0:25:37 > 0:25:40because it's time for Bidet Goes Bang!
0:25:53 > 0:25:54Well done, that is quite a haul.
0:25:54 > 0:25:56Well played, well run.
0:25:56 > 0:26:00Obviously, we would have a really tricky situation now because
0:26:00 > 0:26:01it's the same prizes for you
0:26:01 > 0:26:03and we can't have two teams leaving with prizes
0:26:03 > 0:26:06because you didn't win. But that's OK.
0:26:06 > 0:26:09We've got a way to solve that problem and we'll do it now.
0:26:09 > 0:26:12To get there, it's the Walk of Shame. Follow me.
0:26:12 > 0:26:13Coming through, coming through.
0:26:13 > 0:26:16Coming through, sad team here.
0:26:24 > 0:26:26Sad scenes all over.
0:26:34 > 0:26:36It's a touching moment for us all,
0:26:36 > 0:26:39mostly for you three, because you're about to detonate
0:26:39 > 0:26:42the prizes you would've won into a million little pieces.
0:26:42 > 0:26:44Well played, girls. You're great sports.
0:26:44 > 0:26:46I'm sorry you couldn't win in the end,
0:26:46 > 0:26:49but you get to blow up the prizes you would've been taking home.
0:26:49 > 0:26:52And we're going to do that now. So, let's count you down.
0:26:52 > 0:26:57Five, four, three, two, one!
0:26:57 > 0:27:00LOUD BANG
0:27:08 > 0:27:10That did the trick. Well done, girls.
0:27:10 > 0:27:12That brings today's show to an end.
0:27:12 > 0:27:15In the name of science, we've bent light around corners
0:27:15 > 0:27:19and pitted a postman against a pigeon against an email in a race.
0:27:19 > 0:27:22Shame no-one asked to use my patented, super quick snail mail.
0:27:22 > 0:27:25And I actually had a message from it, just arrived now,
0:27:25 > 0:27:26delivered by a snail.
0:27:26 > 0:27:29"Henry VIII has just got married for the second time."
0:27:29 > 0:27:33Oh, that's nice. Hope it lasts. Anyway, see you next time.
0:28:02 > 0:28:06Subtitles by Red Bee Media Ltd
0:28:06 > 0:28:09E-mail us at subtitling@bbc.co.uk