0:00:36 > 0:00:39Hello, I'm Richard Hammond. Welcome to my Blast Lab.
0:00:39 > 0:00:41Oh, yeah.
0:00:41 > 0:00:46Ah, yes, I forgot about this. I tried to mop that up last night.
0:00:46 > 0:00:49But it just sort of melted the mop.
0:00:49 > 0:00:51Don't go near it, that's the best thing.
0:00:51 > 0:00:53Now we're all gathered into the Blast Lab,
0:00:53 > 0:00:57I can activate the perimeter robot guards. If we can switch them on?
0:00:57 > 0:01:00There, you see? Just for our own security.
0:01:00 > 0:01:02Now, today I have invited
0:01:02 > 0:01:06two teams to compete in scientific challenges to win great prizes.
0:01:06 > 0:01:08So, without further ado...
0:01:08 > 0:01:11EXPLOSION
0:01:11 > 0:01:14- SIREN BLARES - That's one of the lab rats
0:01:14 > 0:01:16turning up late for work,
0:01:16 > 0:01:20encountering the robot guards. Still, it'll teach him to be late.
0:01:20 > 0:01:22Let's look at what's coming up today.
0:01:37 > 0:01:40You'll find me here, in my lab, working away at all hours of day,
0:01:40 > 0:01:43and night. And that's why being one of my lab security guards
0:01:43 > 0:01:45is a pretty stressful job.
0:01:45 > 0:01:49At least, that's what my crack SAS commando unit told me this morning,
0:01:49 > 0:01:51when they didn't show up for work.
0:01:51 > 0:01:54Apparently, it's because of stress that they've all gone
0:01:54 > 0:01:58on a health spa holiday, for massages and beauty treatments.
0:01:58 > 0:02:02So, in the meantime, I have drafted in a woman whose fighting ability
0:02:02 > 0:02:07is matched only by her ability to play Sudoku. It is my Ninja Nan.
0:02:15 > 0:02:18Yeah, Ninja Nan, thanks for standing in.
0:02:18 > 0:02:22Thank you, thank you. I know she may look a little fragile.
0:02:22 > 0:02:23But she is a fully trained ninja.
0:02:26 > 0:02:28Yeah. There you go.
0:02:28 > 0:02:31Nan, if you'd like to take your place in security, please, Nan. Nan!
0:02:31 > 0:02:33Nan! If you'd like to take your place
0:02:33 > 0:02:35in security, thank you very much.
0:02:35 > 0:02:39There she goes. That's not full speed for her, obviously.
0:02:39 > 0:02:42Actually, the army have cloned her DNA
0:02:42 > 0:02:45to create a race of bionic fighting machines.
0:02:45 > 0:02:50Nan, are you settled in yet? Are you settled in to security? There she is.
0:02:50 > 0:02:53See the sort of ninja way she moves her tartan shopping trolley
0:02:53 > 0:02:56next to her, and settles in. Oh, out comes the ninja knitting.
0:02:56 > 0:02:59Yesterday, in her tea break, she knitted a scarf
0:02:59 > 0:03:02that was ten miles long. Should have seen her do it.
0:03:02 > 0:03:07Right, let's meet the people who claim to be our teams for today.
0:03:07 > 0:03:10- CHEERING - Let's have a look.
0:03:12 > 0:03:14Hang on. Hold on there, audience.
0:03:14 > 0:03:16There's no point getting all giddy. We don't know who they are yet.
0:03:16 > 0:03:20They say they're the Yellow Team. We can't be too careful.
0:03:20 > 0:03:24I'm going to ask you to identify yourselves by name.
0:03:24 > 0:03:27What are your names, please?
0:03:27 > 0:03:31- Ellie.- Embla!- Kelsey.- Ellie, Embla, Kelsey. Yeah, that checks out
0:03:31 > 0:03:35with the security file. I'm also going to ask you to demonstrate
0:03:35 > 0:03:38a hidden talent, to prove you are who you say you are.
0:03:38 > 0:03:41Embla, it says here that you're double-jointed. Are you?
0:03:41 > 0:03:44- Yes.- Prove it, please.
0:03:45 > 0:03:47So this is your hands, that you can...
0:03:47 > 0:03:50Aargh! Look at that?
0:03:50 > 0:03:54Yeah, the whole audience is going, ah-ha! Yeah, you are double-jointed.
0:03:54 > 0:03:58You are cleared through security. Come into the Blast Lab.
0:04:03 > 0:04:07Kelsey, Embla and Ellie, hello. Welcome. Where are you all from?
0:04:07 > 0:04:10ALL: Cornwall, and we are...
0:04:10 > 0:04:14the Sassy Sciencettes!
0:04:14 > 0:04:19Not today you're not. You're the Yellow Team.
0:04:19 > 0:04:23Let's meet the people who claim to be your competitors. The Red Team.
0:04:23 > 0:04:26CHEERING
0:04:26 > 0:04:28Right, you say you're the Red Team.
0:04:28 > 0:04:32Give me your names, please, so that I can check them off. You are?
0:04:32 > 0:04:35- Ross.- Bruce.- Kyle. - Ross, Bruce and Kyle.
0:04:35 > 0:04:40Hidden talent - Kyle, it says here you can do Russian martial arts?
0:04:40 > 0:04:43That sounds deadly, and very impressive.
0:04:43 > 0:04:46But don't make a move right now, please.
0:04:46 > 0:04:49Because just behind you, you see, poised like a velociraptor,
0:04:49 > 0:04:53is Ninja Nan. If she knows you're even thinking about martial arts,
0:04:53 > 0:04:57she'll just tear you apart. So, Lab Rats, make her safe, please?
0:04:57 > 0:04:59Contain Ninja Nan.
0:04:59 > 0:05:03In they go. For some reason, she's terrified of this tape.
0:05:03 > 0:05:07She won't go past it. OK, I think, Kyle, she's safe, she's safe.
0:05:07 > 0:05:10You won't get attacked. Demonstrate your Russian martial arts.
0:05:10 > 0:05:14Oh, yes. That's sort of a boxing thing going on there.
0:05:14 > 0:05:16Now he's turned on his team mates.
0:05:16 > 0:05:18It was very casual martial arts, that, Kyle.
0:05:18 > 0:05:21I reckon that'll do. You're cleared through security.
0:05:21 > 0:05:24Come in to the Blast Lab. Come on.
0:05:24 > 0:05:27CHEERING
0:05:27 > 0:05:32Kyle, that was kind of..."Oh, all right, martial arts," casually.
0:05:32 > 0:05:34- Where have you all come from? - ALL: Glasgow,
0:05:34 > 0:05:37and we are the Secret Science Team.
0:05:37 > 0:05:40Not today you're not. You're the Red Team, and that's final.
0:05:40 > 0:05:43Right, welcome, both teams, Red and Yellow, to Blast Lab.
0:05:43 > 0:05:46You need to go and get ready for Round One.
0:05:46 > 0:05:49Let's go and get settled in.
0:05:49 > 0:05:52He's cleverer than Stephen Hawking, faster than Isaac Newton
0:05:52 > 0:05:54and consumes more petrol than Albert Einstein.
0:05:54 > 0:05:57It is my closest pal, Oliver.
0:06:16 > 0:06:20Oliver loves nothing more than collecting facts
0:06:20 > 0:06:22to put in his high-tech fact-nav system.
0:06:22 > 0:06:25Unfortunately, I built it. So, it doesn't always work.
0:06:25 > 0:06:27Not all of the facts are correct.
0:06:27 > 0:06:30So, I'm going to ask our teams to decide which ones are,
0:06:30 > 0:06:34and which ones aren't. Oliver will then tell us, if it's true,
0:06:34 > 0:06:37- he'll say this. - BEEPING
0:06:37 > 0:06:40And if it's false, he'll say this.
0:06:40 > 0:06:42HONKING
0:06:42 > 0:06:43OK, simple enough.
0:06:43 > 0:06:47And this of course, teams, is your first chance to earn points.
0:06:47 > 0:06:49So, we all settled and ready?
0:06:49 > 0:06:51Right, Reds, I'm going to give you a science fact.
0:06:51 > 0:06:54You tell me whether it's true or false.
0:06:54 > 0:06:56Oliver will tell us if you're right.
0:06:56 > 0:06:58The phenomenon known as The Northern Lights
0:06:58 > 0:07:02is created by a wind from the sun.
0:07:02 > 0:07:05Is that true or false? The Northern Lights. Have you heard
0:07:05 > 0:07:08- of The Northern Lights? - Yes.- Very confident.
0:07:08 > 0:07:11Talk about it, while I ask the audience.
0:07:11 > 0:07:15Audience, true or false? Let's see what you think. Shout it out.
0:07:16 > 0:07:21Oh, about a 50/50 split there in the audience, I think.
0:07:21 > 0:07:24But, don't listen to them. What do they know?
0:07:24 > 0:07:26Have a good think, team.
0:07:26 > 0:07:28- False.- You reckon it's false?
0:07:28 > 0:07:31Oliver, is it true or false?
0:07:31 > 0:07:33- TOOTING - It's true!
0:07:33 > 0:07:34Reds, I'm very sorry.
0:07:34 > 0:07:38It's actually named after the Roman goddess of dawn,
0:07:38 > 0:07:40Aurora, and the Greek name for north wind, Boreas.
0:07:40 > 0:07:43Right, Reds, sorry, no point there.
0:07:43 > 0:07:48Yellows, this is your chance to get ahead. Here is your science fact.
0:07:48 > 0:07:53A full moon is nine times brighter than a half moon.
0:07:53 > 0:07:56Have a talk, have a think, talk it over.
0:07:56 > 0:07:58Audience, what do you think... is that true or false?
0:08:01 > 0:08:07Again, pretty much a half-and-half split in the audience, I think.
0:08:07 > 0:08:11The most important opinions here, of course, the Yellow Team.
0:08:11 > 0:08:15Their decision will decide... point or not.
0:08:15 > 0:08:17This will put you in the lead if you get it right.
0:08:17 > 0:08:20What do you think? Embla, you going to be spokesperson?
0:08:20 > 0:08:22- True of false?- True.
0:08:22 > 0:08:25You're saying true. Oliver, is it true or false?
0:08:25 > 0:08:28- TOOTING - It is true.
0:08:28 > 0:08:30The moon is covered in valleys and mountains.
0:08:30 > 0:08:32And normally they're all in shadow.
0:08:32 > 0:08:36But when it's full, the sun's light reaches into those valleys
0:08:36 > 0:08:39and reflects back. So, there's more of the moon to reflect light back.
0:08:39 > 0:08:42So, well done. That means one for the Yellows, they are ahead.
0:08:42 > 0:08:44Now, the third question.
0:08:44 > 0:08:47This is the one that I'm going to ask you as a question.
0:08:47 > 0:08:51It's not a science fact. You give me an answer.
0:08:51 > 0:08:54Write that answer down on the boards in front of you.
0:08:54 > 0:08:57It's not that easy to be exact. So,
0:08:57 > 0:09:01I will give a point to the team that gets closest to the real answer, OK?
0:09:01 > 0:09:04Here comes your question.
0:09:04 > 0:09:09How long would it take Concorde plane to fly around the world?
0:09:09 > 0:09:13Have a chat, have a think. Audience, anybody got any idea?
0:09:13 > 0:09:16Anybody got a clue?
0:09:16 > 0:09:19Right, I'm going to go talk to you. I'm going to use this.
0:09:19 > 0:09:23You think it's a boot, but it's actually a microphone.
0:09:23 > 0:09:28You can see by their faces they're really, really impressed.
0:09:28 > 0:09:31Anybody know how long it would take Concorde to fly round the world?
0:09:31 > 0:09:34I think it's nine hours.
0:09:34 > 0:09:37Right. Not any...
0:09:37 > 0:09:41- Actually, it's 19 hours.- OK.
0:09:41 > 0:09:43Any advance on 19?
0:09:44 > 0:09:47OK.
0:09:47 > 0:09:5098 hours.
0:09:50 > 0:09:5398 hours. This is great, we just keep going back for a bigger number.
0:09:53 > 0:09:5798 hours. Any guess is differently, wildly, from that?
0:09:57 > 0:10:02- Ten days?- Ten days. OK, OK, we've got quite a range of times.
0:10:02 > 0:10:05- Yes?- About three days. - About three days.
0:10:05 > 0:10:08Fair old range of numbers in there. Let's see what our teams think.
0:10:08 > 0:10:11They're competing for points.
0:10:11 > 0:10:15I'll put my brilliant invention down there. Look at that.
0:10:15 > 0:10:19It even looks good. Reds, have you written down an answer?
0:10:19 > 0:10:22Yellows, turn those answers round, so we can all see them.
0:10:22 > 0:10:26Turn your answer round, Reds and Yellows.
0:10:26 > 0:10:31Right, from the Reds, we've got 20 hours. From the Yellows, five days.
0:10:31 > 0:10:36The real time it would take Concorde plane to fly around the world
0:10:36 > 0:10:41is 29 hours and 59 minutes. So the Red Team get the point there.
0:10:44 > 0:10:47That's an equalising point. Well done, both teams.
0:10:58 > 0:11:03That's all to come. But right now it's time for Mini Science.
0:11:03 > 0:11:06This is the round where our teams perform elaborate and fabulous
0:11:06 > 0:11:10scientific experiments, using boring household items. To help,
0:11:10 > 0:11:15I brought my school science teacher back here with a time machine.
0:11:15 > 0:11:18But there's been this small problem.
0:11:18 > 0:11:21She got younger. As I said, there's been a small problem.
0:11:21 > 0:11:23She's small. It is Mini Miss.
0:11:26 > 0:11:30- Don't be smart with me, Richard. - Sorry, Miss.
0:11:30 > 0:11:33- So, what are we going today, Miss? - Well, Richard,
0:11:33 > 0:11:37- today our teams are balloon surfing. - Brilliant! What's balloon surfing?
0:11:37 > 0:11:41One team will start off with five balloons and a surfboard.
0:11:41 > 0:11:43They then have to place the surfboard over the balloon,
0:11:43 > 0:11:46before all of them stand on it.
0:11:46 > 0:11:49They have to stand on it without popping any of the balloons.
0:11:49 > 0:11:52If they do that successfully, it goes over to the next team.
0:11:52 > 0:11:55- OK.- The next team then have to do the same thing
0:11:55 > 0:11:59but have to remove at least one of the balloons, or maybe more.
0:11:59 > 0:12:01And again, they cannot pop any of the balloons.
0:12:01 > 0:12:04If they do that successfully, it goes on to the first team,
0:12:04 > 0:12:06and so on, and so on, and so on.
0:12:06 > 0:12:11Oh, I see. There's quite a lot of tactics in here, then.
0:12:11 > 0:12:13Yes. And, you mustn't forget
0:12:13 > 0:12:18that all three team members have to stand on the board, unsupported.
0:12:18 > 0:12:20Right. OK. And these are the balloons we're using.
0:12:20 > 0:12:23And they're ordinary, everyday balloons.
0:12:23 > 0:12:24They are quite strong.
0:12:24 > 0:12:28Thank you, Miss, thank you. Sorry for playing around.
0:12:28 > 0:12:33Now, because it's a draw, we have to decide now which team goes first.
0:12:33 > 0:12:37And, to do that, I'm going to ask you to draw pens.
0:12:37 > 0:12:41Right, if you'd like to step forward, volunteer.
0:12:41 > 0:12:45If you pull the short pen, the decision goes to the other team.
0:12:45 > 0:12:48Get the long one, it's up to you. Good luck.
0:12:48 > 0:12:52Oh, it's the short one! Reds, you decide if you go first or second.
0:12:52 > 0:12:56Seeing as there's such a lot of tactics to talk about,
0:12:56 > 0:12:59I'm going to give you some time to do that, OK?
0:12:59 > 0:13:01So, now is your planning time.
0:13:01 > 0:13:05Use it wisely. This game is all about pressure.
0:13:05 > 0:13:08But pressure isn't just about how much force is applied,
0:13:08 > 0:13:10it's about the area it's applied over.
0:13:10 > 0:13:13And the easiest way to understand that is,
0:13:13 > 0:13:16if you push one hand onto the other, it's fairly comfortable.
0:13:16 > 0:13:19But if you put the same amount of force on just your
0:13:19 > 0:13:21fingernail, onto your hand...ow!
0:13:21 > 0:13:23It digs in. That's because the pressure is increased.
0:13:23 > 0:13:26Because it's spread over a tiny, tiny area, instead of a big area.
0:13:26 > 0:13:30In this experiment, the balloons, when we apply
0:13:30 > 0:13:34the weight from the teams onto them, hopefully, will spread out.
0:13:34 > 0:13:37Which means, well, there's more area for the weight to go on to.
0:13:37 > 0:13:43So, the pressure is less. They go from that, to that, hopefully.
0:13:43 > 0:13:46All we've got to do now is each team decide
0:13:46 > 0:13:48how many balloons to use to do this.
0:13:48 > 0:13:53Teams, your tactical time is coming to a close. Reds, it's your call.
0:13:53 > 0:13:56- Do you want to go first or second? - Second.- Second.
0:13:56 > 0:13:58I think, tactically, that's the wisest choice.
0:13:58 > 0:14:01Which means, Yellows, you're going first.
0:14:01 > 0:14:05The good thing is you get to go balloon surfing first,
0:14:05 > 0:14:08which is possibly great. How many balloons are you going to go for?
0:14:08 > 0:14:13- Four.- Four. Straightaway, you're getting rid of a balloon.
0:14:13 > 0:14:17They're brave, the Yellows. OK, forward to the surfing area.
0:14:17 > 0:14:19And let's give it a go.
0:14:25 > 0:14:27I'd love to see the thinking going on.
0:14:27 > 0:14:31They're not just sticking them on. They're thinking, where?
0:14:31 > 0:14:34I think, already the teams are starting to consider
0:14:34 > 0:14:35weight, and where it's going.
0:14:35 > 0:14:38Weight distribution. We happy, Yellows?
0:14:38 > 0:14:40Happy with that balloon sighting?
0:14:40 > 0:14:45OK. Right, lab rats will now put the surfboard into position for you.
0:14:45 > 0:14:49When you step onto the board, they will hold you until you're steady,
0:14:49 > 0:14:53then the lab rats will stand back, and put both arms in the air.
0:14:53 > 0:14:56At that moment, we will begin the timer,
0:14:56 > 0:14:57and you'll hear that counting down.
0:14:57 > 0:15:00You've got to do five seconds for it to count. All right?
0:15:00 > 0:15:05So, four balloons holding up three people, hopefully. Here we go.
0:15:05 > 0:15:06Step onto the surfboard, please.
0:15:08 > 0:15:10You go first. I'll go last.
0:15:11 > 0:15:13I'm scared.
0:15:16 > 0:15:20OK, we have one team member on. Let's get the others on.
0:15:20 > 0:15:22Lean forward a bit, Kelsey.
0:15:26 > 0:15:27Well, all three...
0:15:27 > 0:15:30Oh, Lord! We've had a disaster.
0:15:33 > 0:15:36That's one gone. The Reds there are celebrating wildly.
0:15:36 > 0:15:38The game's not over yet.
0:15:38 > 0:15:41Because for this to count the Reds have actually still got to do it.
0:15:41 > 0:15:46They've still got to beat them. That means, Reds, to better that,
0:15:46 > 0:15:51- I reckon we'll let you off with four. If you can do four.- OK, four.
0:15:57 > 0:16:00OK, Reds, you've seen the drill.
0:16:00 > 0:16:03The lab rats will the get the board ready for your surfing.
0:16:03 > 0:16:05The lab rats will support you getting on.
0:16:05 > 0:16:08Tell them when you're balanced and ready, if you manage.
0:16:08 > 0:16:10Then we'll begin the countdown.
0:16:26 > 0:16:28Start the timer.
0:16:31 > 0:16:33- BELL RINGS - Down you come!
0:16:40 > 0:16:43The point goes to the Reds, which means the scores now...
0:16:43 > 0:16:45Well, done, Red team.
0:16:45 > 0:16:48So, we had four balloons there,
0:16:48 > 0:16:51supporting three scientists. That's pretty impressive.
0:16:51 > 0:16:54I wonder how many balloons it would take to support -
0:16:54 > 0:16:56oh, I don't know - a car?
0:16:58 > 0:17:01For this experiment we need a lot of balloons.
0:17:01 > 0:17:05The world's first balloons were made of dried animal bladders.
0:17:05 > 0:17:06Not much fun to blow up
0:17:06 > 0:17:08and certainly not much fun for the animals.
0:17:08 > 0:17:11Luckily, these days, they're made of rubber,
0:17:11 > 0:17:14which has led to happier animals and fresher breaths all round.
0:17:14 > 0:17:19My lab rats have used all of their puff to make a 200-balloon sandwich.
0:17:24 > 0:17:29As we've just seen, balloons can hold a fair bit of weight.
0:17:29 > 0:17:32So one lab rat isn't a problem.
0:17:32 > 0:17:34But what about seven of them?
0:17:36 > 0:17:40As my test zone lab rats clamber aboard, still no popping.
0:17:40 > 0:17:43A few have squashed down, but not a problem.
0:17:43 > 0:17:45And I'll tell you why.
0:17:45 > 0:17:48The reason we can stand on balloons like this is
0:17:48 > 0:17:52because the weight of the lab rats is spread out over all the balloons.
0:17:52 > 0:17:56The pressure on each balloon is not enough to make them pop.
0:17:56 > 0:17:59But, if you increase the weight enough, then, at some point,
0:17:59 > 0:18:02the pressure will become too much for the balloons to take.
0:18:06 > 0:18:08The Ford Granada...
0:18:08 > 0:18:11one and a quarter tonnes of family motoring.
0:18:11 > 0:18:13And a load of party balloons.
0:18:13 > 0:18:17It's time for the ultimate machine-versus-balloon match-up.
0:18:17 > 0:18:20OK, hold the experiment.
0:18:20 > 0:18:25Teams, for an extra point, you tell me, does it work?
0:18:25 > 0:18:29Can those balloons support that car, without any balloons bursting?
0:18:29 > 0:18:31Have a quick think between you, have a quick think.
0:18:31 > 0:18:35I'm going to ask you for an answer. Audience, what do we think?
0:18:35 > 0:18:38Will it, or won't it? Anybody got any idea?
0:18:38 > 0:18:41Hang on, I'll get my microphone boot.
0:18:42 > 0:18:46Soon to be available from just down there.
0:18:46 > 0:18:49If you want the only one there'll ever be of it. What do you reckon?
0:18:49 > 0:18:51- Um...no.- You think not?
0:18:51 > 0:18:53- No.- You think not?- Yup.
0:18:53 > 0:18:55- You think yes?- Yes.
0:18:55 > 0:18:57All right. Teams, you've had some time to think.
0:18:57 > 0:19:01Your answers, please. You think it will, do you think it won't?
0:19:01 > 0:19:04- I think they'll burst.- You think it won't do it. Yellows?
0:19:04 > 0:19:07- I think it will. - A split like this is good
0:19:07 > 0:19:10because there's definitely some points up for grabs.
0:19:10 > 0:19:14You think, then, that many balloons can't do it.
0:19:14 > 0:19:16At least one will burst.
0:19:16 > 0:19:19At least one of will burst. Yellows, you think it'll be OK.
0:19:19 > 0:19:22Well, there's a point in it for you. Scores at the moment, two-one.
0:19:22 > 0:19:25Need these points. Let have a look at what happens.
0:19:34 > 0:19:37Here we go, slowly now.
0:19:37 > 0:19:39Balloons are gradually taking the weight.
0:19:46 > 0:19:48They look like they're fit to burst.
0:19:53 > 0:19:56But, with the crane unhooked,
0:19:56 > 0:19:59the full weight of the car is on the balloons
0:19:59 > 0:20:01and not a single one has burst.
0:20:01 > 0:20:03That is unbelievable!
0:20:05 > 0:20:09So, you've got that point back, means equal again, well done.
0:20:09 > 0:20:10Sorry, Reds. It worked,
0:20:10 > 0:20:14spreading all that weight over all that balloons. They could do it.
0:20:14 > 0:20:18Right, the next thing to happen, both teams have got to get changed
0:20:18 > 0:20:20into your special protective outfits
0:20:20 > 0:20:24because it's messy, messy Mess Test next. Away you go.
0:20:24 > 0:20:29While they do that, actually, the whole balloon thing, it was easy.
0:20:29 > 0:20:33After we'd done the car, we found we could take things even further.
0:20:35 > 0:20:38A family car isn't complete without a family.
0:20:38 > 0:20:41And on my family holidays we always packed everything,
0:20:41 > 0:20:44including the kitchen sink.
0:20:44 > 0:20:48Surely that extra weight will increase the pressure.
0:20:48 > 0:20:49All aboard.
0:20:52 > 0:20:54Close to two tonnes of force,
0:20:54 > 0:20:58and not a single popped balloon to show for it.
0:21:00 > 0:21:03My lab rats get a little bit excitable when they go on holiday.
0:21:08 > 0:21:11And that's exactly why I never let the lab rats go on holiday.
0:21:11 > 0:21:16Right, we must move on. It's time now for the messy, messy Mess Test.
0:21:18 > 0:21:22Which, today, is in the septic tank. Yeah, comfortable?
0:21:22 > 0:21:27Good. Try and think of all the most horrible, disgusting things you can.
0:21:27 > 0:21:32And then times it by a thousand million billion.
0:21:32 > 0:21:35And then times that by a gazillion. And you're kind of getting close.
0:21:35 > 0:21:38Just try not to get any on you. Too late.
0:21:38 > 0:21:42OK, this is the game. Hidden in the tank are discs.
0:21:42 > 0:21:45Some of them are like this one... duds.
0:21:45 > 0:21:48But the ones you're after are these that my lab rat is holding.
0:21:49 > 0:21:51They'll have the colour of your team on them
0:21:51 > 0:21:52and the names of prizes.
0:21:52 > 0:21:55Lab Rat, hide those and then get out.
0:21:55 > 0:21:58Your job, teams, is to get as many of those prize discs as you can
0:21:58 > 0:22:03out of the tank, and that unspeakable goo, into these baskets.
0:22:03 > 0:22:06There's two. One for the Yellow team, one for the Red team.
0:22:06 > 0:22:10Then the team to get the most prize discs into their basket
0:22:10 > 0:22:14will take home the prizes written on those discs.
0:22:14 > 0:22:16The losing team will blow theirs up.
0:22:16 > 0:22:22Now, as it's a draw, thus far, in the game, you both start together.
0:22:22 > 0:22:25You've got some time to get as many of those discs as you can
0:22:25 > 0:22:26into these baskets.
0:22:26 > 0:22:29And that some time starts...now.
0:22:30 > 0:22:36Both teams are not afraid to get in amongst the awful waste from my lab.
0:22:36 > 0:22:39The Yellows there are dunking two prize discs.
0:22:39 > 0:22:41Wait, one of them is red. That won't count.
0:22:41 > 0:22:45Now the Reds are at it! Into their net goes a Yellow prize.
0:22:45 > 0:22:49Let's quickly see again what went wrong at the start of this match.
0:22:49 > 0:22:50In their eagerness to get started,
0:22:50 > 0:22:54both Red and Yellow teams put the wrong colour discs in their basket.
0:22:54 > 0:22:58Those won't count, when my lab rats add up the scores,
0:22:58 > 0:23:00at the end of this extraordinary encounter.
0:23:00 > 0:23:02That's better, the Reds are off the mark
0:23:02 > 0:23:04with a correctly coloured disc.
0:23:04 > 0:23:06SIREN WAILS
0:23:06 > 0:23:07This will confuse them even more.
0:23:07 > 0:23:10I forgot, again!
0:23:10 > 0:23:13By the way, teams, every now and again there'll be a siren
0:23:13 > 0:23:18and more horrible, horrible gunge will come down those pipes.
0:23:18 > 0:23:22I forgot to tell them. But they do bring more prize discs in as well,
0:23:22 > 0:23:24so...
0:23:24 > 0:23:26- ALARM BLARES - There it goes again.
0:23:26 > 0:23:32And it looks like both teams have taken advantage of the extra discs.
0:23:36 > 0:23:39And, look at this, I think Bruce has just realised
0:23:39 > 0:23:45what he did wrong earlier. The crowd enjoying this gungy encounter.
0:23:45 > 0:23:48It is very close at this point, between the two teams.
0:23:49 > 0:23:52- ALARM BLARES - More horrible waste comes down,
0:23:52 > 0:23:55and it's going to be crucial that the teams bag the extra discs.
0:23:55 > 0:23:59The Yellows have grabbed one and the Reds have to respond.
0:24:02 > 0:24:04Which they do.
0:24:04 > 0:24:07It's slim pickings in there now, with both teams doing well.
0:24:07 > 0:24:10It is too close to call.
0:24:14 > 0:24:17- KLAXON BLARES - Time is up.
0:24:17 > 0:24:21That's it, teams, no more, no more.
0:24:21 > 0:24:24Let's find out which team has won.
0:24:24 > 0:24:26We've got lab rats in counting frantically.
0:24:26 > 0:24:29Lab Rat, the Yellows have got how many?
0:24:29 > 0:24:31One...two...
0:24:31 > 0:24:34Five for the Yellows. For the Reds, how many?
0:24:34 > 0:24:37Four. That means the Yellows are the winners!
0:24:38 > 0:24:42Yellow team, you'll be taking home one each of these prizes.
0:24:42 > 0:24:45Let's have a look at what you've won. Ready, Nan?
0:24:45 > 0:24:47A disgusting digestion kit,
0:24:47 > 0:24:49a flying wind copter,
0:24:49 > 0:24:52adventure watches,
0:24:52 > 0:24:54a lunar eclipse bedroom light
0:24:54 > 0:24:58and a white wings glider kit. All those are for the Yellow team.
0:24:58 > 0:25:01We'll have all those ready for you.
0:25:01 > 0:25:03Now, the slightly tricky bit.
0:25:03 > 0:25:04Reds, not looking quite so chirpy.
0:25:04 > 0:25:08- Seven.- It's too late now, the game's over. Let's have a look
0:25:08 > 0:25:11at what you would have won. The lunar eclipse bedroom light
0:25:11 > 0:25:14would have been there for each of you. Yup, yup, yup.
0:25:14 > 0:25:18You'd each have been taking home, oh, a disgusting digestion kit.
0:25:18 > 0:25:23And a multimedia player. Yeah,
0:25:23 > 0:25:27yeah. Oh, and Toxic Mutants, as it turns out.
0:25:27 > 0:25:31But, it's OK, you're not taking them home. You're going to blow them up.
0:25:31 > 0:25:33Because it's time for Bidet Goes Bang.
0:25:42 > 0:25:45Well, it's that time again. The Yellows, today,
0:25:45 > 0:25:49are standing here behind me. Huge mound of presents in a wheelbarrow.
0:25:49 > 0:25:51- Happy with our prizes? - Yeah.- You earned them.
0:25:51 > 0:25:56You won, fair and square. Reds, different mood over on this side.
0:25:56 > 0:25:57- How we feeling?- Fine.
0:25:57 > 0:26:02- Fine.- When I said, you're going to blow your prizes up, somebody...
0:26:02 > 0:26:05Ross, I think it was you, went, "Yeah!" So, it's not bad.
0:26:05 > 0:26:09- I don't want any, anyway. - Yeah, exactly. I didn't want them.
0:26:09 > 0:26:12That's the attitude. Blow them up instead. It's better.
0:26:12 > 0:26:15- What went wrong in the game? - We were too slow.
0:26:15 > 0:26:18It's not that easy. You either find them, or you don't.
0:26:18 > 0:26:21OK, Reds, well, when it comes to explosions,
0:26:21 > 0:26:26every scientist knows that toilets go crash and bathtubs go wallop.
0:26:26 > 0:26:28But bidets go bang, as we're about to find out.
0:26:28 > 0:26:32Your prizes are in position there. So, if you'd like to step forward.
0:26:32 > 0:26:34- Who's going to do the plunger? - All of us.
0:26:34 > 0:26:38You're all going to do it together. Team effort. OK, lift it up.
0:26:38 > 0:26:41Hold it there, we're going to give you the countdown.
0:26:41 > 0:26:43Are we ready, teams, audience?
0:26:43 > 0:26:48Five, four, three, two, one.
0:26:56 > 0:27:00There you go! Oh, well, today we've learned about
0:27:00 > 0:27:03spreading the force and distribution of weight.
0:27:03 > 0:27:06I'm off to distribute my weight on the sofa, and spread the force
0:27:06 > 0:27:09of a packet of biscuits across my stomach. See you!
0:27:18 > 0:27:21Blast Lab was recorded in front of a live studio audience.
0:27:21 > 0:27:24No lab rats were hurt in filming...
0:27:24 > 0:27:25probably.
0:27:32 > 0:27:34Subtitles by Red Bee Media Ltd
0:27:34 > 0:27:36Email subtitling@bbc.co.uk