0:00:33 > 0:00:35Well, you can forget today's show.
0:00:35 > 0:00:38I have just completed my perpetual motion machine,
0:00:38 > 0:00:42and it is going to make me rich beyond my wildest dreams!
0:00:42 > 0:00:43EXPLOSION
0:00:43 > 0:00:47Ah, that's... Yeah, that... Oh, that...
0:00:47 > 0:00:49Yeah, that's...disappointing.
0:00:49 > 0:00:52OK! Well, if you forget what I just said, I AM Richard Hammond,
0:00:52 > 0:00:54and this IS my Blast Lab!
0:00:57 > 0:00:59Sorry about that, audience.
0:00:59 > 0:01:01It didn't go as well as I'd hoped.
0:01:01 > 0:01:04This is where I perform my top-secret science experiments.
0:01:04 > 0:01:06To help me, I have two teams who'll
0:01:06 > 0:01:09battle against each other to win some amazing prizes and answer
0:01:09 > 0:01:13some of science's biggest questions. Let's see what's in store today.
0:01:26 > 0:01:30Now, usually, of course, my top-secret underground lab
0:01:30 > 0:01:33is protected by a crack team of SAS guards.
0:01:33 > 0:01:36Sadly, though, one of them is at home in bed with a cold,
0:01:36 > 0:01:38and all the others have gone round
0:01:38 > 0:01:41to read him Angelina Ballerina stories.
0:01:41 > 0:01:44But no matter! I have drafted in the very next best thing.
0:01:44 > 0:01:46She's the OAP with a PhD in pain.
0:01:46 > 0:01:48It is my Ninja Nan!
0:01:58 > 0:02:01Ninja Nan, thanks for standing in.
0:02:01 > 0:02:05I know she looks fragile, but she is in fact a fully trained ninja.
0:02:08 > 0:02:11See? Nan, if you'd like to take your place in security...
0:02:11 > 0:02:13Oh, I wish she'd turn it up!
0:02:13 > 0:02:15Nan! Nan, ooh!
0:02:15 > 0:02:18If you'd like to take your place in security, thank you. Thank you.
0:02:18 > 0:02:20Away she goes there. Look at her go.
0:02:20 > 0:02:22I know. The speed is amazing.
0:02:22 > 0:02:25You're impressed. I can tell.
0:02:25 > 0:02:27Handy with nunchakus, throwing stars,
0:02:27 > 0:02:30bow staffs and knitting needles.
0:02:30 > 0:02:33She should be there by now. Nan, are you there in...?
0:02:33 > 0:02:35Oh, there she is.
0:02:35 > 0:02:38Good. It makes you feel safe just knowing
0:02:38 > 0:02:42she's there to protect us against whatever should come our way.
0:02:42 > 0:02:44Oh, what's this? Oh, picture.
0:02:44 > 0:02:48Oh, that was when she won the World Tug Of War competition. Yeah.
0:02:48 > 0:02:51The following year, she did it again - only using her teeth.
0:02:51 > 0:02:53They were in her hand, obviously, but she did win.
0:02:53 > 0:02:56Let's meet the people trying to get into my lab today.
0:02:56 > 0:02:58Hello. Where are you?
0:02:59 > 0:03:00OK. Yeah, yeah.
0:03:00 > 0:03:04They say they're the Yellow Team. We can't be too careful round here.
0:03:04 > 0:03:06Everybody wants to get into my lab.
0:03:06 > 0:03:08We have to do some security checks.
0:03:08 > 0:03:11First of all, identify yourselves by name, please.
0:03:11 > 0:03:13- Alice.- Saddia.- Alex.
0:03:13 > 0:03:16Alice, Saddia and Alex. Yeah, that checks out.
0:03:16 > 0:03:18Now, under "hidden talent" it says all of you
0:03:18 > 0:03:20are going to do something. What?
0:03:20 > 0:03:23- Karate!- Karate. Don't move a muscle!
0:03:23 > 0:03:29Ninja Nan, if she even hears you saying that, she'll spring.
0:03:29 > 0:03:32Right, if we make her safe, please? Thank you, Lab Rats.
0:03:32 > 0:03:34She'll never cross that line.
0:03:34 > 0:03:36You are now safe to demonstrate your karate.
0:03:36 > 0:03:38Aye! Aye!
0:03:38 > 0:03:40Aye! Aye!
0:03:40 > 0:03:43- You could put this to music.- Aye! Aye!
0:03:43 > 0:03:46OK, come into the lab. You're cleared through security.
0:03:52 > 0:03:56Sorry about the security, you can't be too careful round here.
0:03:56 > 0:03:57Where have you all come from?
0:03:57 > 0:04:01Manchester, and we're the AU Girls!
0:04:01 > 0:04:03That's your own name you made up.
0:04:03 > 0:04:06You needn't have bothered. You're the Yellow Team! But welcome.
0:04:06 > 0:04:10Now we're going to meet the people who claim to be your opposition.
0:04:10 > 0:04:11They say they're the Red Team.
0:04:14 > 0:04:17OK, you say you're the Red Team, yeah?
0:04:17 > 0:04:20But we have to carry out some security checks.
0:04:20 > 0:04:23- Your names, first of all. Identify yourselves, please.- Ben.
0:04:23 > 0:04:25- Alex.- Daniel.
0:04:25 > 0:04:29Ben, Alex, Daniel. Yeah, that checks out. Under "hidden talent"
0:04:29 > 0:04:31it says "juggling". Who can juggle?
0:04:31 > 0:04:34- Me.- Daniel, if you can juggle, you can come in.
0:04:35 > 0:04:38Yeah, that's working.
0:04:38 > 0:04:40You are the Red Team. Come through security.
0:04:44 > 0:04:47Reds, welcome to Blast Lab. Where have you all come from?
0:04:47 > 0:04:51The Wirral, and we are Eureka!
0:04:51 > 0:04:54Wow! You're not. You're the Red Team, but welcome.
0:04:54 > 0:04:58I've just noticed something. Boys' team, girls' team.
0:04:58 > 0:05:00That means competition is going to be fierce.
0:05:00 > 0:05:02- Which team's going to win?- Us!
0:05:02 > 0:05:07OK, both teams, time to go and get settled in, ready for round one.
0:05:07 > 0:05:09Go and get comfortable.
0:05:09 > 0:05:12I'd like to introduce now my best friend. His brain is brighter
0:05:12 > 0:05:15than his headlights, thankfully. It is Oliver.
0:05:32 > 0:05:36When I fitted Oliver's state-of-the-art Fact Nav system,
0:05:36 > 0:05:39the instruction manual said it was so easy you could do it
0:05:39 > 0:05:42with your eyes closed - so I did!
0:05:42 > 0:05:44And as a result, it doesn't work.
0:05:44 > 0:05:46A lot of the facts are not correct.
0:05:46 > 0:05:49A lot of them are. What I need is our two teams to tell us which
0:05:49 > 0:05:53are true and which are false. Oliver knows everything, so, when they've
0:05:53 > 0:05:55given their answers, he'll tell us.
0:05:55 > 0:05:57If it's true, he'll do this.
0:05:57 > 0:05:59SIREN
0:05:59 > 0:06:01And if it's false, he'll do this.
0:06:01 > 0:06:03PARP
0:06:03 > 0:06:06Reds, you're going first. I'm going to give you a science fact.
0:06:06 > 0:06:09You have to tell me true or false. Here is your science fact.
0:06:09 > 0:06:13Venus is the coldest planet in the solar system.
0:06:13 > 0:06:14Have a talk.
0:06:14 > 0:06:17Audience, what do you think? Venus is the coldest planet
0:06:17 > 0:06:19in the solar system - true or false?
0:06:19 > 0:06:22THEY SHOUT
0:06:23 > 0:06:24Ooh, I don't know.
0:06:24 > 0:06:28Quite a lot thinking false, quite a lot thinking true. Ignore them.
0:06:28 > 0:06:31Do you happen to know the answer to this?
0:06:31 > 0:06:34- We think we know. - OK, what do you think?- False.
0:06:34 > 0:06:36OK, Daniel, you think false.
0:06:36 > 0:06:37Oliver, is it true or false?
0:06:37 > 0:06:39- PARP - It is false.
0:06:39 > 0:06:43That's a point for the Red Team straightaway. Well done.
0:06:43 > 0:06:47Venus is the hottest planet in the solar system. There's more than
0:06:47 > 0:06:521,000 volcanoes or volcanic centres larger than 12 miles across.
0:06:52 > 0:06:57That's 19.3 kilometres in diameter, I think.
0:06:57 > 0:07:01Right! Let's have science fact for Yellow Team.
0:07:01 > 0:07:06If all of the world's 170 billion trees were cut down and
0:07:06 > 0:07:12used to make paper, there would be 215 thousand...million...million...
0:07:12 > 0:07:16It's 215 quadrillion sheets of A4.
0:07:16 > 0:07:18Is that true or false?
0:07:18 > 0:07:21Have a talk. Audience, is that true or false?
0:07:21 > 0:07:23THEY SHOUT
0:07:23 > 0:07:27Everybody down here's saying false. Everybody there's saying true.
0:07:27 > 0:07:29So it's dividing the audience. What do we think, Yellows?
0:07:29 > 0:07:31- True.- You're going for true.
0:07:31 > 0:07:33Oliver, is it true or false?
0:07:33 > 0:07:36- SIREN - It is true. That's a point to you guys as well.
0:07:36 > 0:07:39It's now 1-1.
0:07:39 > 0:07:42Nearly four billion trees are cut down every year for paper,
0:07:42 > 0:07:45which is about 35% of all the trees that are cut down.
0:07:45 > 0:07:49A lot of them come from tree farms, so they are replanted each time.
0:07:49 > 0:07:51Some more information for you there.
0:07:51 > 0:07:55You want the next question, don't you? I can tell that, Daniel.
0:07:55 > 0:07:57Your third question. This is not a true-or-false.
0:07:57 > 0:08:01That's why you have boards. Write your answers down on there.
0:08:01 > 0:08:03I'll give the point to the team who gets nearest.
0:08:03 > 0:08:08How much in tonnes does the Earth weigh?
0:08:08 > 0:08:11Have a good think cos I'm going to go and talk to the audience.
0:08:11 > 0:08:15Through science in Blast Lab, I've actually combined this cone
0:08:15 > 0:08:18with a microphone. Look at that. It's incredible.
0:08:18 > 0:08:20- Yeah, it is.- What do you think?
0:08:20 > 0:08:23About 27 million.
0:08:23 > 0:08:25You really looked like you were thinking about that.
0:08:25 > 0:08:29Anybody else got any other ideas? Down here, what do we think?
0:08:29 > 0:08:31- 80 million.- 800 million.
0:08:31 > 0:08:33- 800 million.- 800 million.
0:08:33 > 0:08:36Quite a range of answers going on amongst the audience.
0:08:36 > 0:08:40- Our teams look like they're ready. Have you got an answer?- Mm-hm.
0:08:40 > 0:08:43You got an answer, Reds? Both teams, please turn your boards round.
0:08:43 > 0:08:47From the Reds, 4 billion - big number.
0:08:47 > 0:08:51From the Yellows, an even bigger number - 25 billion.
0:08:51 > 0:08:55Well, the answer is 5.972 sextillion -
0:08:55 > 0:08:58which is a thousand trillion - tonnes.
0:08:58 > 0:09:01It's really heavy. It's a lot.
0:09:01 > 0:09:03You wouldn't want it on your foot, put it that way.
0:09:03 > 0:09:06And, with the biggest answer, then, the point goes to the Yellows,
0:09:06 > 0:09:09which brings the score to 2-1 to the Yellows
0:09:09 > 0:09:11at the end of the first round.
0:09:24 > 0:09:27This is all to come, but now it's Mini Science,
0:09:27 > 0:09:29where our contestants will be using ordinary household objects
0:09:29 > 0:09:32to conduct extraordinary science experiments,
0:09:32 > 0:09:35and for this I need the help of my old science teacher.
0:09:35 > 0:09:37I transported her through time,
0:09:37 > 0:09:41and things went a bit wrong, so she's now ten.
0:09:41 > 0:09:43It is, of course, Mini Miss!
0:09:45 > 0:09:48- Hello, Richard. - Hello.- Are you looking forward to
0:09:48 > 0:09:51doing some educational and exciting experiments today?
0:09:51 > 0:09:54- Sorry, what?- Richard, were you daydreaming?
0:09:54 > 0:09:57Sorry, Miss. I was just trying to work out a new BMX stunt
0:09:57 > 0:10:00I'm gonna try after this show, where I get two Lab Rats...
0:10:00 > 0:10:01Sorry, Miss. Sorry.
0:10:01 > 0:10:05Perhaps, if you'd have concentrated more in class, you wouldn't have
0:10:05 > 0:10:08failed in transporting me through time properly.
0:10:08 > 0:10:11- Richard!- Sorry, I was thinking again, Miss. Sorry.
0:10:11 > 0:10:12What have you got for us today?
0:10:12 > 0:10:18Well, today we're looking at turning forces and levers. On their tables,
0:10:18 > 0:10:21the teams have everything they need to make an egg flinger.
0:10:21 > 0:10:24Nan is asleep on the sofa, so...
0:10:26 > 0:10:27- What?- I'm just...
0:10:27 > 0:10:32Are we going to throw eggs at Nan while she's asleep on the sofa?
0:10:32 > 0:10:36- Yes.- I'd like to point out that Nan isn't actually asleep.
0:10:36 > 0:10:38Ninja Nan is deep in ninja meditation, so don't worry, teams.
0:10:38 > 0:10:40There's absolutely no chance
0:10:40 > 0:10:44you could wake her and there'd be a horrible, horrible scene.
0:10:44 > 0:10:46I just wanted to make that clear, Miss. Sorry.
0:10:46 > 0:10:50Anyway, once they've assembled their egg flinger,
0:10:50 > 0:10:53they then have to launch their eggs at Nan.
0:10:53 > 0:10:57- And the team to egg Nan the most wins the game.- So how do these work?
0:10:57 > 0:10:59- I'll demonstrate.- I thought you might, Miss.
0:11:02 > 0:11:05Hey! Oh, you missed her, Miss.
0:11:05 > 0:11:07Probably just as well for us all.
0:11:07 > 0:11:09So that's the theory.
0:11:09 > 0:11:13Teams, you're going to have some time to assemble your egg flingers,
0:11:13 > 0:11:17and you've got a choice of pivots to use and a choice of spoons.
0:11:17 > 0:11:21As you get going on the game, you can at any point take this out
0:11:21 > 0:11:24and change spoon. So just get the basics of it assembled,
0:11:24 > 0:11:28then you can experiment with which spoons and how to set them up.
0:11:28 > 0:11:32All right, you have some time to assemble your egg flingers,
0:11:32 > 0:11:35and that time starts...now!
0:11:43 > 0:11:47What we're talking about here, actually, is levers,
0:11:47 > 0:11:51and in a lever like the one they're using, and I have one here,
0:11:51 > 0:11:52it's a very simple thing.
0:11:52 > 0:11:54It's only got three parts.
0:11:54 > 0:11:58At one end is load. That's the load that you're moving - an egg.
0:11:58 > 0:12:02At the other end is effort, where you put in the effort to move it.
0:12:02 > 0:12:04Separating them in the middle is the pivot.
0:12:04 > 0:12:07We've given them a choice of where to put that pivot.
0:12:07 > 0:12:10If they go for this one, nearer the load, then
0:12:10 > 0:12:13they'll pull this end of the lever down - quite easy to do, actually.
0:12:13 > 0:12:17It'll move this end that far, and away goes the egg.
0:12:17 > 0:12:20If they use this pivot here, they haven't got to pull it as far, but
0:12:20 > 0:12:24it's going to be harder work to snap it down to there because they're
0:12:24 > 0:12:27moving the egg all of this way. The egg will go further.
0:12:27 > 0:12:31This is because, when you've pulled the lever down, the egg is moving -
0:12:31 > 0:12:35if you're using this pivot, pretty quickly - up to the top.
0:12:35 > 0:12:39Blast Lab's all-time hero Sir Isaac Newton said anything that's moving
0:12:39 > 0:12:42basically wants to keep on doing that until something
0:12:42 > 0:12:45gets in their way to stop it - another force, or in this case,
0:12:45 > 0:12:48Ninja Nan's face. It's as simple as that.
0:12:48 > 0:12:51It's up to the teams to try different spoons, lengths of levers
0:12:51 > 0:12:52and points for the pivot.
0:12:52 > 0:12:56Judging by the thinking going on, they're giving it some thought.
0:12:56 > 0:12:58Teams, our building time is up.
0:12:58 > 0:13:01We must move on to the next phase,
0:13:01 > 0:13:06which is throwing eggs at Ninja Nan - obviously, for scientific reasons.
0:13:06 > 0:13:08Teams, there's teamwork here,
0:13:08 > 0:13:12to decide which spoons, which levers, where to use your pivots.
0:13:12 > 0:13:16That's up to you. The aiming - that's definitely up to you.
0:13:16 > 0:13:19Your some time to throw as many eggs as you can at Ninja Nan -
0:13:19 > 0:13:22never thought I'd say those words! - starts now!
0:13:25 > 0:13:27Well, they're away. The first egg.
0:13:27 > 0:13:31Oh, dear, a disaster from the Reds.
0:13:31 > 0:13:33More force. Teamwork falling apart.
0:13:33 > 0:13:35'The Yellows' pivot is broken.
0:13:35 > 0:13:38'That could seriously hinder their chances.'
0:13:38 > 0:13:40Whoa! Just missed. Just missed!
0:13:42 > 0:13:46You can see the energy in the egg as it reaches the top and leaves
0:13:46 > 0:13:49the pivot... Just missed her again.
0:13:50 > 0:13:53Ready, steady, go!
0:13:53 > 0:13:57So far, Ninja Nan's meditation has gone uninterrupted.
0:13:59 > 0:14:02Whoa! Very nearly.
0:14:04 > 0:14:07Now the Reds' pivot has gone.
0:14:07 > 0:14:08Oh!
0:14:20 > 0:14:23I think what we're having is teamwork issues.
0:14:23 > 0:14:26In all instances, it's better to have a loader,
0:14:26 > 0:14:29somebody to steady the pivot in the middle -
0:14:29 > 0:14:34that's essential to the lever - then somebody to put in the effort,
0:14:34 > 0:14:37to fling the egg. And we're struggling.
0:14:38 > 0:14:43They're simple things, levers, but harder than you might think to use.
0:14:54 > 0:14:56KLAXON SOUNDS
0:14:56 > 0:15:00Teams, you had the unique, once-in-a-lifetime opportunity
0:15:00 > 0:15:02to pelt Ninja Nan with eggs.
0:15:02 > 0:15:07However, I can safely say that the score is 0-0, which means
0:15:07 > 0:15:10we're still at 2-1 to the Yellows.
0:15:10 > 0:15:13CHEERING
0:15:13 > 0:15:17Now, medieval warriors used catapults just like these
0:15:17 > 0:15:19to destroy their enemies' buildings.
0:15:19 > 0:15:23Course, they didn't fire eggs with them, and their aim
0:15:23 > 0:15:26was probably better than our teams.
0:15:26 > 0:15:29They used something a bit bigger.
0:15:30 > 0:15:36Standing 18 metres tall, weighing more than 22 tonnes and capable
0:15:36 > 0:15:41of unleashing deadly missiles across huge distances towards castles,
0:15:41 > 0:15:45this is the medieval siege weapon known as the trebuchet.
0:15:48 > 0:15:54Not to be operated by Lab Rats, this machine needs an expert.
0:15:57 > 0:16:00Hello. I'm the Trebuchet Master.
0:16:01 > 0:16:06Our Lab Rat is relaxing in his castle, which looks suspiciously
0:16:06 > 0:16:08like an open-air living room.
0:16:08 > 0:16:12Hunger strikes, so he phones to order the king of brain foods -
0:16:12 > 0:16:14the Hawaiian pizza.
0:16:14 > 0:16:16The outdoor living room is a lovely idea,
0:16:16 > 0:16:20but placing it in the firing line of the most destructive
0:16:20 > 0:16:24medieval siege weapon may have been a mistake.
0:16:24 > 0:16:28Especially as this is the largest trebuchet in the world today,
0:16:28 > 0:16:31and it's being loaded.
0:16:32 > 0:16:37We're using Lab Rats to power it, as it's dangerous, and they're
0:16:37 > 0:16:42useless, expendable creatures. No normal person should do this.
0:16:42 > 0:16:46Trebuchets are basically giant levers with a sling
0:16:46 > 0:16:50and ammunition at one end and a heavy counterweight at the other.
0:16:50 > 0:16:54When fired, the counterweight falls quickly towards the ground,
0:16:54 > 0:16:58which should raise the sling up and send the ammunition flying -
0:16:58 > 0:17:00hopefully at our target.
0:17:00 > 0:17:04- BELL RINGS - It sounds like dinner's arrived.
0:17:04 > 0:17:08But what state will his beautiful living room be in when he gets back?
0:17:13 > 0:17:15OK, hold the experiment.
0:17:15 > 0:17:19Don't like to be cruel, but there's a point in this.
0:17:19 > 0:17:21So it's 2-1. This could even it up.
0:17:21 > 0:17:25The point goes to the team that is most accurate.
0:17:25 > 0:17:28I'm going to tell you some facts.
0:17:28 > 0:17:32Four attempts at hitting the Lab Rats' outdoor living room.
0:17:32 > 0:17:38Out of those four, how many direct hits do you think it will score?
0:17:38 > 0:17:41- Two.- OK, two for the Reds.
0:17:41 > 0:17:44- Two.- Yellows, two. Ah, yes.
0:17:44 > 0:17:48Right. You see, the thing is, that means you both either win
0:17:48 > 0:17:50or both lose the point.
0:17:50 > 0:17:53OK. Let's have a look and see what does happen.
0:17:55 > 0:17:57OK. First attempt.
0:17:57 > 0:17:59It's looking good.
0:17:59 > 0:18:01It's looking good. It's...
0:18:02 > 0:18:04..it's disappeared.
0:18:04 > 0:18:06No idea where that went. Brilliant.
0:18:07 > 0:18:09Second attempt, then.
0:18:13 > 0:18:17Might be able to reduce a castle to rubble,
0:18:17 > 0:18:20but Auntie's antique pine chair is another matter.
0:18:20 > 0:18:22Best we try it again.
0:18:25 > 0:18:29OK. We're running low on ammunition now.
0:18:33 > 0:18:37Success! That easy chair never stood a chance!
0:18:39 > 0:18:41Great to see the easy chair cop it,
0:18:41 > 0:18:44but no points for either team.
0:18:44 > 0:18:48Now, both teams, it's time for you to get changed and ready
0:18:48 > 0:18:53cos we're moving to the final round. Get your protective suits on. Quick.
0:18:53 > 0:18:57While they're going off and getting changed, audience,
0:18:57 > 0:18:59something else to share.
0:18:59 > 0:19:04None of my Lab Rats would have a living room as nice as that set.
0:19:04 > 0:19:06I don't pay them enough.
0:19:06 > 0:19:09Let's aim our trebuchet at where they really live.
0:19:09 > 0:19:11At home with the Lab Rats.
0:19:11 > 0:19:16Not exactly luxurious, but at least it's got four walls...for now.
0:19:16 > 0:19:21Unfortunately, this particular caravan is marked for demolition.
0:19:21 > 0:19:25- MARCHING BEAT - The early warning drums sound.
0:19:25 > 0:19:28No reaction.
0:19:28 > 0:19:31The drums sound again.
0:19:31 > 0:19:32Still nothing.
0:19:33 > 0:19:36The drums sound again.
0:19:36 > 0:19:41Don't the Lab Rats realise they are in impending danger?
0:20:02 > 0:20:05Well, at least they got the message in the end.
0:20:05 > 0:20:08CACKLING LAUGHTER
0:20:08 > 0:20:10SCREAMING
0:20:25 > 0:20:29Another...almost direct hit for the trebuchet.
0:20:29 > 0:20:33Let's have another go before it gets too dark to see our fireballs.
0:20:36 > 0:20:39Three hours and 30 fireballs later,
0:20:39 > 0:20:44our Trebuchet Master is still going strong.
0:20:48 > 0:20:49Ah, so close.
0:20:49 > 0:20:53In fact, I think it landed underneath our caravan.
0:20:53 > 0:20:56Yes, there's smoke. There's fire...
0:20:56 > 0:20:59So there we have it.
0:21:01 > 0:21:06If you've a caravan you need to get rid of and aren't in a hurry,
0:21:06 > 0:21:10Blast Lab recommends the medieval siege weapon, the trebuchet.
0:21:18 > 0:21:21- CHEERING - Right. And on that note,
0:21:21 > 0:21:25it's time for us to move on to the Messy Messy Mess Test.
0:21:27 > 0:21:31Today is the Gungey Bungee, featuring my Blast Lab catapults
0:21:31 > 0:21:35designed and built by myself for an elaborate experiment
0:21:35 > 0:21:40in airborne cat transportation which was brilliant until the RSPCA
0:21:40 > 0:21:44became involved before it started. We'll use it to project prize pods
0:21:44 > 0:21:47across the toxic tank into the prize zone.
0:21:47 > 0:21:49These are the pods.
0:21:49 > 0:21:52You fire as many into the prize zone as you can.
0:21:52 > 0:21:55This being Blast Lab, there is a twist.
0:21:55 > 0:21:59We have a member of each team standing in the toxic tank.
0:21:59 > 0:22:03Their jobs are, firstly, to stop the opposing team's prize pods
0:22:03 > 0:22:05as they arc gracefully across the tank.
0:22:05 > 0:22:09The second job is to return your team's prize pods to the baskets
0:22:09 > 0:22:12so they've more to fire into the prize zone.
0:22:12 > 0:22:16The winning team is the one with most pods in the prize zone,
0:22:16 > 0:22:20they keep the prizes written on them - a cargo copter,
0:22:20 > 0:22:24plug-and-play electronic set, MP3 player...you'll take those home.
0:22:24 > 0:22:27The losing team will blow their prizes up.
0:22:27 > 0:22:30And just one note for both you here.
0:22:30 > 0:22:33This bit of tape here - very important you don't pass it,
0:22:33 > 0:22:35cos this is the deep end.
0:22:35 > 0:22:39I don't actually know HOW deep, but they have found four
0:22:39 > 0:22:44different types of octopus in there and a really weird sharky eel thing,
0:22:44 > 0:22:47a lot of teeth, which occasionally shows itself...
0:22:47 > 0:22:51You should be fine. It won't go past that tape...I imagine.
0:22:51 > 0:22:56It's simple. Yellow, you're in the lead with the scores at 2-1,
0:22:56 > 0:22:58those points bought an advantage -
0:22:58 > 0:23:02a five-second lead. When you hear the first siren, start firing.
0:23:02 > 0:23:05Reds, hold until the second one.
0:23:05 > 0:23:07That's your cue to get firing.
0:23:07 > 0:23:11You have some time to get as many pods into the prize zone as you can,
0:23:11 > 0:23:14and that "some time" starts...ooh...
0:23:14 > 0:23:15Now!
0:23:15 > 0:23:19The Yellows with a head start, and they know what they want -
0:23:19 > 0:23:21- going straight for the MP3 player.
0:23:21 > 0:23:25Second siren has gone and Reds are in with a chance
0:23:25 > 0:23:27as the score is still 0-0.
0:23:33 > 0:23:38Both Red and Yellow homing in on the prize zone, though there does
0:23:38 > 0:23:42seem to be a number of red pods floating in the gunge.
0:23:48 > 0:23:50A Yellow misfire there.
0:23:50 > 0:23:52Good grouping by the Reds!
0:23:52 > 0:23:56And if the aim of the game was to get as many pods as you can next
0:23:56 > 0:23:59to each other in the gunge, they'd be world champions.
0:23:59 > 0:24:02Oh, absolutely terrible from both teams.
0:24:02 > 0:24:05The Reds firing high and wide, and the Yellows...
0:24:05 > 0:24:08They're not really firing at all.
0:24:08 > 0:24:13It's actually hard to say which team is worse at this game
0:24:13 > 0:24:17with such fierce competition to come last on display.
0:24:17 > 0:24:18Quite breathtaking!
0:24:18 > 0:24:20I spoke too soon.
0:24:20 > 0:24:23Perfect shot by the Yellows, whilst Reds...
0:24:23 > 0:24:25Reds, what are you doing?!
0:24:28 > 0:24:33Some fine teamwork from the Yellows, who seem to have woken up now
0:24:33 > 0:24:36and are firing on all cylinders.
0:24:36 > 0:24:39And another for the Yellows.
0:24:48 > 0:24:51Another miss for the Reds - brilliant.
0:24:51 > 0:24:55Time's running out - or it might be. With my "some time" clock,
0:24:55 > 0:24:58it's impossible to tell.
0:25:00 > 0:25:03KLAXON SOUNDS
0:25:03 > 0:25:06Everybody stop right where you are.
0:25:06 > 0:25:10Stop right where you are. Don't go down that end.
0:25:10 > 0:25:12I did warn you. Let's find out which team won.
0:25:12 > 0:25:14Red Team, how many do we have?
0:25:14 > 0:25:16Two. For the Yellows?
0:25:16 > 0:25:18Four. That means Yellow Team have won!
0:25:18 > 0:25:21Yeah!
0:25:21 > 0:25:24Right, this is what the Yellow Team has won.
0:25:24 > 0:25:26Ready, Nan?
0:25:26 > 0:25:28An Uno Flash game.
0:25:28 > 0:25:31Horrible Science Book.
0:25:31 > 0:25:32Cargo Helicopter!
0:25:32 > 0:25:35and an MP3 player for each of you!
0:25:35 > 0:25:36CHEERING
0:25:36 > 0:25:38All those prizes coming home.
0:25:38 > 0:25:42On the other side of this particular equation, the Red Team,
0:25:42 > 0:25:47let's find out what you WOULD have won. A Horrible Science Book each,
0:25:47 > 0:25:50a Transforming Robot for each of you.
0:25:50 > 0:25:53Instead of taking those prizes home, you'll blow them up,
0:25:53 > 0:25:56because it is time for Bidet Goes Bang!
0:26:04 > 0:26:07Here we are again - one team,
0:26:07 > 0:26:11the Yellows, with a wheelbarrow full of prizes, all yours,
0:26:11 > 0:26:14so you're feeling great. Happy, content. Well played.
0:26:14 > 0:26:16The Reds, by contrast,
0:26:16 > 0:26:19are not behind a wheelbarrow full of prizes.
0:26:19 > 0:26:24They're behind the plunger to blow theirs up. How do you feel?
0:26:24 > 0:26:27We don't feel too bad cos at least we see the explosion.
0:26:27 > 0:26:29It's some consolation.
0:26:29 > 0:26:33It's generous of me to let you blow your prizes up.
0:26:33 > 0:26:36- What went wrong?- We didn't fix the spoon in the egg...
0:26:36 > 0:26:38The egg flinging.
0:26:38 > 0:26:40You messed it up, let's be honest.
0:26:40 > 0:26:45- Time to do the blowing up. Who's doing the exploding?- All three.
0:26:45 > 0:26:48Share the blame. The wisest way to do it.
0:26:48 > 0:26:51Some inventions are just a flash in the pan,
0:26:51 > 0:26:55but this one's much better. It's a flash and a bang in the pan!
0:26:55 > 0:26:59Your prizes are in position, ready. Step forward and lift the plunger
0:26:59 > 0:27:01into firing position.
0:27:01 > 0:27:04Don't fire it yet. Don't knock any of the wires!
0:27:04 > 0:27:06The countdown...
0:27:06 > 0:27:08Five, four,
0:27:08 > 0:27:10three, two,
0:27:10 > 0:27:11one...
0:27:11 > 0:27:13Go! Oh, crikey!
0:27:13 > 0:27:17Sort of contained in the bag but blew the door off,
0:27:17 > 0:27:21Interesting results. That's all we've got time for.
0:27:21 > 0:27:25We learned about catapults and levers. We could have done that
0:27:25 > 0:27:28by learning Greek and translating ancient theories.
0:27:28 > 0:27:31Instead, we decided to fire eggs at my nan.
0:27:31 > 0:27:33See you soon!
0:27:33 > 0:27:35CHEERING AND APPLAUSE
0:27:38 > 0:27:41Blast Lab was recorded before a live studio audience.
0:27:41 > 0:27:45No Lab Rat was harmed during filming. There was a minor injury,
0:27:45 > 0:27:48but he's OK now...I think.
0:27:48 > 0:27:51Subtitles by Red Bee Media Ltd
0:27:51 > 0:27:54E-mail subtitling@bbc.co.uk