0:00:32 > 0:00:34CHEERING AND APPLAUSE
0:00:34 > 0:00:37Nobody move, nobody move.
0:00:37 > 0:00:40That pterodactyl I cloned does its droppings in here.
0:00:40 > 0:00:42I will catch them, don't worry.
0:00:42 > 0:00:44Do you know what? I haven't got time for this, you take it.
0:00:44 > 0:00:47There you go, you take over, just catch them when they fall.
0:00:47 > 0:00:50AUDIENCE: Ewww!
0:00:53 > 0:00:54It's probably good for his hair.
0:00:54 > 0:00:57Anyway, I'm Richard Hammond, welcome to my Blast Lab!
0:00:57 > 0:01:00CHEERING AND APPLAUSE
0:01:00 > 0:01:01This is, of course,
0:01:01 > 0:01:05the most secretive science laboratory in the whole world.
0:01:05 > 0:01:10Well, except for you watching and all of these people here, obviously.
0:01:10 > 0:01:13And all of them over there, yeah.
0:01:13 > 0:01:16And my mum and dad over there, yeah.
0:01:16 > 0:01:18That really is my mum and dad.
0:01:18 > 0:01:21Joining me shortly are two groups of young Einsteins
0:01:21 > 0:01:24who will battle it out for some great prizes by doing experiments
0:01:24 > 0:01:26and learning all about science along the way.
0:01:26 > 0:01:28Coming up, Fact Nav 2.0 with Oliver.
0:01:28 > 0:01:30CHEERING AND APPLAUSE
0:01:30 > 0:01:33Awkward!
0:01:33 > 0:01:35He's not here.
0:01:35 > 0:01:36Maybe broken down on the way in,
0:01:36 > 0:01:38fingers crossed he'll make it in time.
0:01:38 > 0:01:42In Mini Science, Mini Miss shows the teams how to make hovercrafts
0:01:42 > 0:01:44with the help of a very special guest.
0:01:44 > 0:01:45CHEERING AND APPLAUSE
0:01:45 > 0:01:49We shall see a giant nut versus a flying squirrel
0:01:49 > 0:01:53in one of the most bizarre races ever recorded.
0:01:53 > 0:01:55CHEERING AND APPLAUSE
0:01:55 > 0:01:58And this week's Messy, Messy, Mess Test
0:01:58 > 0:02:01is the one and only, back by popular demand -
0:02:01 > 0:02:04well, popular with everyone who isn't actually playing it -
0:02:04 > 0:02:06it is the Bridge Of Destiny.
0:02:06 > 0:02:08CHEERING AND APPLAUSE
0:02:09 > 0:02:11Now, most hi-tech, top-secret laboratories
0:02:11 > 0:02:14are protected by extremely modern security systems.
0:02:14 > 0:02:18My security is over 70 years old, and it's the best of the lot.
0:02:18 > 0:02:21It is Ninja Nan!
0:02:21 > 0:02:23CHEERING AND APPLAUSE
0:02:28 > 0:02:31No sudden movements in the lab today,
0:02:31 > 0:02:35because Ninja Nan is surrounded by her crack team of OANs,
0:02:35 > 0:02:38old-age ninjas, and it looks like they're playing cards.
0:02:38 > 0:02:41Nan always wins, probably because of her X-ray vision.
0:02:41 > 0:02:44Let's have a look at who's trying to get into my lab today.
0:02:44 > 0:02:47CHEERING AND APPLAUSE
0:02:50 > 0:02:53OK, so this is all very nice and happy so far,
0:02:53 > 0:02:56but you say you're the Red Team, you could be anybody.
0:02:56 > 0:02:58Identify yourselves by name.
0:02:58 > 0:03:00- Gemma!- Katie!- Jessica!
0:03:00 > 0:03:03Gemma, Katie, Jessica... Yes, that's what I've got written down here!
0:03:03 > 0:03:05Under talent, Gemma, I've got your name.
0:03:05 > 0:03:07How are you going to prove you are you?
0:03:07 > 0:03:10- I'm going to do some karate. - That's what it says here.
0:03:10 > 0:03:12We'll have to hope Ninja Nan doesn't notice.
0:03:12 > 0:03:14Go, go, go!
0:03:14 > 0:03:15OK.
0:03:15 > 0:03:19OK, fair enough, that'll do, come on into the lab, come on into the lab!
0:03:19 > 0:03:20CHEERING AND APPLAUSE
0:03:22 > 0:03:24Hello, Reds, hello. Hello.
0:03:24 > 0:03:25You're through this far,
0:03:25 > 0:03:28but you're not all the way through security yet.
0:03:28 > 0:03:29We have to be careful round here,
0:03:29 > 0:03:32all sorts of people want to get in.
0:03:32 > 0:03:34We've got to make sure you are genuine.
0:03:34 > 0:03:36We agreed a password with the real Red Team.
0:03:36 > 0:03:39You should know what that password is. What do you think it is?
0:03:39 > 0:03:41ALL: Mirror.
0:03:41 > 0:03:44That's what I've got down here, yeah, mirror it is. Why mirror?
0:03:44 > 0:03:46Because when we were in Lanzarote on holiday once,
0:03:46 > 0:03:50there was some public toilets with a full-length mirror at the end.
0:03:50 > 0:03:52I walked straight into it, thinking it was more toilets.
0:03:52 > 0:03:54- You walked into the mirror?- Yeah.
0:03:54 > 0:03:56- You'll have felt a bit of an idiot. - Pretty much.
0:03:56 > 0:04:00OK, well, Reds, go and get settled in, ready for the first round.
0:04:00 > 0:04:01Away you go, they are the Red Team.
0:04:01 > 0:04:03CHEERING
0:04:03 > 0:04:06We have a Red Team! Good, so that's one team.
0:04:06 > 0:04:08Now we need another, we need a Yellow Team.
0:04:08 > 0:04:12Let's meet the three people who say it's them.
0:04:12 > 0:04:13CHEERING AND APPLAUSE
0:04:16 > 0:04:20OK, well, you look like the Yellow Team, but we can't be too sure.
0:04:20 > 0:04:23For security purposes, you must identify yourselves by name.
0:04:23 > 0:04:24You are...
0:04:24 > 0:04:26- Sean!- Kelin!- Kai!
0:04:26 > 0:04:29Sean, Kelin, Kai, yeah, that's what I've got down here.
0:04:29 > 0:04:32Kelin, I have your name next to talent, what are you going to do?
0:04:32 > 0:04:34I'm going to do a magic trick.
0:04:34 > 0:04:36Go on, we'll be the judge of that.
0:04:36 > 0:04:40- I have one coin in this hand.- Yes. - And I have one coin in that hand.
0:04:40 > 0:04:43- So you have.- And when I turn my hands over like this.- Yes...
0:04:43 > 0:04:47There are no coins in that hand, and there are two coins in that hand.
0:04:47 > 0:04:50Look at that, that's useful, probably!
0:04:50 > 0:04:52That's magic, come into the lab.
0:04:52 > 0:04:54CHEERING
0:04:54 > 0:04:57Over here, please, you're cleared through that far,
0:04:57 > 0:05:00no further, Ninja Nan's watching.
0:05:00 > 0:05:03She's watching, you're not quite through security yet,
0:05:03 > 0:05:04just one further test.
0:05:04 > 0:05:07If you are the real Yellow Team, you would know the password
0:05:07 > 0:05:10that we agreed with the real Yellow Team. What do you think it is?
0:05:10 > 0:05:14- ALL: Window.- Window it is, that's what it says. Why?
0:05:14 > 0:05:16Once, when I was on my school bus,
0:05:16 > 0:05:19I accidentally smashed the window trying to swat a fly.
0:05:19 > 0:05:21Whoa, whoa, hang on, you did what?
0:05:21 > 0:05:23I accidentally smashed a window.
0:05:23 > 0:05:24- With your hand?- With my bag.
0:05:24 > 0:05:28Wow! I'm presuming there was quite a lot of trouble after that?
0:05:28 > 0:05:30- Yeah.- A lot of shouting?- Yeah.
0:05:30 > 0:05:33- Learnt your lesson?- Yeah.- Best not! OK, fair enough.
0:05:33 > 0:05:35Yellows, go and get settled in,
0:05:35 > 0:05:37ready for the first game. We have our two teams!
0:05:37 > 0:05:40CHEERING
0:05:40 > 0:05:43Now I'd like you to meet a car that's so incredibly clever,
0:05:43 > 0:05:44he's classed as a genius
0:05:44 > 0:05:47and totally exempt from road tax and parking tickets.
0:05:47 > 0:05:50Well, at least that's what I tell the traffic wardens.
0:05:50 > 0:05:53I'm hoping he's made it, it is my good friend Oliver.
0:05:53 > 0:05:56CHEERING AND APPLAUSE
0:06:08 > 0:06:10CHEERING AND APPLAUSE
0:06:11 > 0:06:14- HORN TOOTS - Ah! Finally!
0:06:16 > 0:06:19Finally, he's here, he's made it. Let's hook him up to the system.
0:06:19 > 0:06:23There we go, all connected in, good grief!
0:06:23 > 0:06:25What happened, alternator again?
0:06:25 > 0:06:27- HONKS - Oh, fan belt?
0:06:27 > 0:06:30- HONKS - Flat battery?
0:06:30 > 0:06:33- HONKS - Well, what was it then?
0:06:33 > 0:06:37- HORN TOOTS - Oh, you pressed snooze on your alarm! Easy mistake to make.
0:06:37 > 0:06:40Anyway, now that you're here,
0:06:40 > 0:06:44I should explain Oliver has a brand new Fact Nav 2.0 system.
0:06:44 > 0:06:45It was a DIY installation,
0:06:45 > 0:06:49which in my case stands for "damage it yourself",
0:06:49 > 0:06:52because now it doesn't seem to quite work.
0:06:52 > 0:06:55Some of the facts are incorrect, and that means it's up to our teams
0:06:55 > 0:06:58to tell me if the facts I give you are true or false. Simple as that.
0:06:58 > 0:07:02If they are true, Oliver will let us know by doing this.
0:07:02 > 0:07:04SIRENS WAIL
0:07:04 > 0:07:07If they're false, he'll do this.
0:07:07 > 0:07:09HORN HONKS
0:07:09 > 0:07:12Here's how we play. Each team has three red lights,
0:07:12 > 0:07:15every time you answer a question correctly,
0:07:15 > 0:07:18I'll light one of your lights green.
0:07:18 > 0:07:22First to three green lights wins, takes the point and we move on.
0:07:22 > 0:07:25If you answer a question incorrectly,
0:07:25 > 0:07:29we will light one of the other team's lights green.
0:07:29 > 0:07:31It means you could win for the Yellows,
0:07:31 > 0:07:33you could win for the Reds.
0:07:33 > 0:07:37Think before you answer. Everybody understand what to do?
0:07:37 > 0:07:38- Yes.- Good.
0:07:38 > 0:07:42The question to start us off is a "nearest to" answer.
0:07:42 > 0:07:45I'll give the green light to the team nearest the real answer.
0:07:45 > 0:07:47Here it is.
0:07:47 > 0:07:52In total, how many people have walked on the moon?
0:07:52 > 0:07:55In total, how many people have walked on the moon?
0:07:59 > 0:08:00Time's up.
0:08:00 > 0:08:03- Reds, you go first, what have you got?- Seven.
0:08:03 > 0:08:05Seven, according to the Reds.
0:08:05 > 0:08:08- 11. - 11, according to the Yellows.
0:08:08 > 0:08:11The actual answer is...
0:08:11 > 0:08:16- 12, which means the Yellows are very nearly bang on, well done! - CHEERING AND APPLAUSE
0:08:16 > 0:08:20Well done, Yellows. Sorry, Reds, you were closer than I expected.
0:08:20 > 0:08:23Right, so that's one light lit green for the Yellows.
0:08:23 > 0:08:26You take control as you get the first true or false question.
0:08:26 > 0:08:28Here it comes.
0:08:28 > 0:08:33Around 70% of the human body is water.
0:08:33 > 0:08:35Around 70% of the human body is water.
0:08:35 > 0:08:40I'm talking about humans, lab rats are slightly different.
0:08:40 > 0:08:43Let's just sample one of these. Could I have that? Thank you.
0:08:43 > 0:08:47Slightly different with lab rats. let me just have a listen.
0:08:48 > 0:08:50RUSHING WATER
0:08:50 > 0:08:55Oh, yeah. About 99% water, I reckon, him. Yeah.
0:08:55 > 0:08:58PLOPPING
0:08:58 > 0:09:00OK, let's have a look at this one.
0:09:00 > 0:09:02DRIPPING
0:09:02 > 0:09:07Not a lot going on in there at all.
0:09:07 > 0:09:11OK, but that's in the case of lab rats, we're talking humans here.
0:09:11 > 0:09:14Around 70% of the human body is water.
0:09:14 > 0:09:16Is that true or false?
0:09:16 > 0:09:19- True.- You think it's true? Oliver, is it true or false?
0:09:19 > 0:09:21SIREN
0:09:21 > 0:09:24It's true. Well done, Yellows, well done.
0:09:24 > 0:09:25CHEERING AND APPLAUSE
0:09:25 > 0:09:29That's the second green light for the Yellow Team.
0:09:29 > 0:09:32Right, Reds, I don't like to put it this way,
0:09:32 > 0:09:35but you're under pressure now, girls.
0:09:35 > 0:09:39Fingers crossed for you. Here comes your science fact.
0:09:39 > 0:09:44Each year, the Earth moves closer towards the sun.
0:09:44 > 0:09:49Is that true or false? Each year, the Earth moves closer to the sun.
0:09:49 > 0:09:53I need you to tell me if it's true or false.
0:09:53 > 0:09:56- False.- False. - You think it's false?
0:09:56 > 0:09:57Oliver, is it true or false?
0:09:57 > 0:09:59HORN
0:09:59 > 0:10:00It's false, well done, Reds.
0:10:00 > 0:10:03That's a green light for you. You're still in it.
0:10:03 > 0:10:05CHEERING AND APPLAUSE
0:10:06 > 0:10:09Don't know about you, I'm exhausted from that.
0:10:09 > 0:10:13Yellows, I'm not going to mess about, here comes your science fact.
0:10:13 > 0:10:17Sharks can see in the dark better than cats.
0:10:17 > 0:10:18Is that true or false?
0:10:18 > 0:10:22Sharks can see in the dark better than cats, is that true or false?
0:10:22 > 0:10:24- We think it's true. - You think it's true.
0:10:24 > 0:10:26Oliver, put us out of our misery, please.
0:10:26 > 0:10:29- the Yellows think it's true? - True.
0:10:29 > 0:10:30Is it true or false?
0:10:30 > 0:10:34- SIREN - It is true. That's the third light lit green for the Yellows.
0:10:34 > 0:10:36Well done!
0:10:36 > 0:10:39CHEERING AND APPLAUSE
0:10:39 > 0:10:42Sharks, in fact, are amazing when it comes to senses.
0:10:42 > 0:10:45They have a highly developed sense of taste and amazing hearing.
0:10:45 > 0:10:48They can also smell 10,000 times better than human beings,
0:10:48 > 0:10:51which could be both good and, if you think about it,
0:10:51 > 0:10:52in some circumstances -
0:10:52 > 0:10:57hanging around with my lab rats, for instance - quite bad.
0:10:57 > 0:11:02All of which means that the Yellows get the third light lit green,
0:11:02 > 0:11:05the Yellows win. The score is 1-0 to the Yellows.
0:11:05 > 0:11:07CHEERING
0:11:16 > 0:11:20CHEERING
0:11:20 > 0:11:23To help with Mini Science, I decided to build a time machine
0:11:23 > 0:11:29to transport my old science teacher through time to the lab to help me.
0:11:29 > 0:11:33And it worked, but with just one tincey, wincey, teeny, weeny
0:11:33 > 0:11:35side effect - she looks 50 years younger.
0:11:35 > 0:11:37She is, of course, Mini Miss.
0:11:37 > 0:11:39CHEERING
0:11:44 > 0:11:46Hi, Miss. You know, I thought you'd be more pleased
0:11:46 > 0:11:48at looking that much younger.
0:11:48 > 0:11:52Pleased? Do you know how difficult it is at parents' evening
0:11:52 > 0:11:54when you look like a ten-year-old?
0:11:54 > 0:11:57Yeah, good point. Sorry, Miss. Sorry, do apologise.
0:11:57 > 0:11:59Oh...
0:11:59 > 0:12:01- Miss...- Yes, Richard?
0:12:01 > 0:12:03Miss?
0:12:03 > 0:12:06Who is that over there making a lot of noise
0:12:06 > 0:12:07who looks a bit like Ninja Nan?
0:12:07 > 0:12:09That IS Ninja Nan.
0:12:09 > 0:12:12- Sorry?- That IS Ninja Nan!
0:12:12 > 0:12:16At night she becomes the hip-hop superstar that is Nanye West.
0:12:16 > 0:12:20Right. I thought she spent her evenings playing bingo with you.
0:12:20 > 0:12:22I wouldn't know, Richard,
0:12:22 > 0:12:25they won't let me in now they think I'm a ten-year-old.
0:12:25 > 0:12:27Yeah, good point. I've said I'm sorry.
0:12:27 > 0:12:29All right, enough of the racket! Nan!
0:12:29 > 0:12:31Nan! Thank you.
0:12:31 > 0:12:33OK. Thank you, Nanye.
0:12:33 > 0:12:36Anyway, what will our teams be facing in Mini Science today?
0:12:36 > 0:12:41Our teams will be testing out friction in a game I like to call...
0:12:41 > 0:12:43DEEP VOICE
0:12:43 > 0:12:45Don't know how she does that, I still don't know.
0:12:45 > 0:12:48And they're going to be investigating this using balloons.
0:12:48 > 0:12:51Yes, by attaching them to some of Ninja Nan's records.
0:12:51 > 0:12:53Are you sure she'll be happy with this,
0:12:53 > 0:12:56because they're her records and she is still a ninja, you know?
0:12:56 > 0:12:58Stop being such a scaredy-cat, Richard.
0:12:58 > 0:13:01This is what our teams have to do.
0:13:01 > 0:13:04The teams must attach these balloons to these bottle caps
0:13:04 > 0:13:08which are fixed onto Ninja Nan's records to make record skaters.
0:13:08 > 0:13:11They then have to propel them down the hover lane,
0:13:11 > 0:13:13and the further they get, the more points they win.
0:13:13 > 0:13:16Each team must build three record skaters
0:13:16 > 0:13:19and the team with the highest total score after the three rounds
0:13:19 > 0:13:21- wins the game. - Right. You have some time
0:13:21 > 0:13:23to actually build your record skaters.
0:13:23 > 0:13:26Mini Miss is going to help you. I'll leave you to it, OK?
0:13:30 > 0:13:32This is all about overcoming friction,
0:13:32 > 0:13:35because, when the record's lying flat, there's a large amount of it
0:13:35 > 0:13:38in contact with the ground. That means a lot of friction
0:13:38 > 0:13:41so the record won't slide. What the bottle cap does -
0:13:41 > 0:13:44you feed it into the little holes - when you lift it,
0:13:44 > 0:13:46the air that's pushed out goes through the cap,
0:13:46 > 0:13:49underneath the record and lifts it.
0:13:49 > 0:13:52That means there's much less friction, so it can travel further.
0:13:52 > 0:13:55It does that because, as the air's being squeezed out of the balloon,
0:13:55 > 0:13:58it's going that way. Then the third law of Sir Isaac Newton...
0:13:58 > 0:14:00# Hallelujah. #
0:14:00 > 0:14:03..our all-time hero, dictates that, if there's a push that way,
0:14:03 > 0:14:06there'll be a push that way, so it lifts the record.
0:14:06 > 0:14:09Of course, in this game, the teams don't want to push too hard
0:14:09 > 0:14:11because, with less friction,
0:14:11 > 0:14:13the records could go down the hover lane
0:14:13 > 0:14:15and slide off the end.
0:14:15 > 0:14:16Then they get no points.
0:14:16 > 0:14:18So there's a bit of skill and judgement here.
0:14:20 > 0:14:22Right. Both teams have assembled
0:14:22 > 0:14:24their three record skaters, ready to go.
0:14:24 > 0:14:26Yellows, the score right now is 1-0.
0:14:26 > 0:14:29You won Fact Nav, you get to choose. First or second?
0:14:29 > 0:14:32- ALL: Second.- OK. Reds, that means you're first. Are you ready?
0:14:35 > 0:14:39OK, remember to release the bottle cap to release the air
0:14:39 > 0:14:42and set your record hovering and then judge it. It's hovering.
0:14:42 > 0:14:44Good luck. Oh, oh, oh, oh, oh, oh.
0:14:44 > 0:14:45Oh, wow!
0:14:45 > 0:14:47Oh, please stop!
0:14:47 > 0:14:48AUDIENCE: Ohhh!
0:14:48 > 0:14:50Oh, no! Oh, no!
0:14:52 > 0:14:56So close for the Reds, but the friction couldn't stop it at all,
0:14:56 > 0:15:00with the record sliding off the end of the track and onto the floor.
0:15:00 > 0:15:03That's zero points for the Reds.
0:15:03 > 0:15:06Now it's round one for the Yellows.
0:15:06 > 0:15:07Good luck, Sean.
0:15:08 > 0:15:12OK. He's setting his record skater hovering, he's ready.
0:15:12 > 0:15:15Oh, yes, it's hovering.
0:15:15 > 0:15:17Well, a very gentle push indeed. Oh, yeah.
0:15:17 > 0:15:20Talk about the opposite extreme from the Yellows,
0:15:20 > 0:15:24with the friction now stopping the record almost immediately.
0:15:24 > 0:15:25That's zero for the Yellows.
0:15:29 > 0:15:31OK, setting it hovering.
0:15:31 > 0:15:32Oh, it's a good push.
0:15:32 > 0:15:34Will it make it? Will it make it?
0:15:34 > 0:15:37Oh, oh, still going.
0:15:37 > 0:15:40AUDIENCE: Ohhh!
0:15:40 > 0:15:41Oh, oh, oh, oh!
0:15:43 > 0:15:46There you go. Well done, Reds.
0:15:46 > 0:15:48That's three points for the Reds.
0:15:50 > 0:15:52Yellows, you're under pressure.
0:15:52 > 0:15:53Here we go.
0:15:55 > 0:15:56Setting it operating.
0:15:56 > 0:15:58Under a lot of pressure.
0:15:58 > 0:15:59That's a good positive shove.
0:15:59 > 0:16:02Oh, oh, oh, oh. Look, oh, ohh.
0:16:02 > 0:16:04I'd say that's staying. Well done!
0:16:04 > 0:16:05Well played.
0:16:05 > 0:16:08Two points for the Yellows.
0:16:11 > 0:16:143-2 to the Reds as the Reds step up to take their final shot
0:16:14 > 0:16:15at this, their final skate.
0:16:18 > 0:16:19Oh, oh, oh, oh. I... Oh...
0:16:19 > 0:16:21AUDIENCE: Ohhh!
0:16:23 > 0:16:25- OK. - CHEERING
0:16:25 > 0:16:28A good effort there by Katie,
0:16:28 > 0:16:31but unfortunately the record didn't travel very far.
0:16:31 > 0:16:33Will it be enough to beat the Yellows?
0:16:33 > 0:16:35That's one point for the Reds.
0:16:35 > 0:16:38Bringing the score to 4-2 to the Reds.
0:16:38 > 0:16:41The Yellows have got to get three to win.
0:16:41 > 0:16:45That's quite a way down the hover lane, that's quite risky.
0:16:45 > 0:16:47Good luck, good luck.
0:16:47 > 0:16:49- Right.- Go on, Kai.
0:16:49 > 0:16:52There's some support for you down here, Yellows,
0:16:52 > 0:16:54a few members of the audience.
0:16:54 > 0:16:57Oh, he's away. Oh, a good...
0:16:57 > 0:17:01Oh, oh, oh, I can't stand... Oh, oh, oh. Oh, no!
0:17:01 > 0:17:06Kai's attempt started well, but there wasn't enough air
0:17:06 > 0:17:08pushing down to overcome the friction on our hover lane.
0:17:08 > 0:17:12That's two points for the Yellows.
0:17:12 > 0:17:14CHEERING
0:17:16 > 0:17:21All of which means it's a draw between Reds and Yellows.
0:17:21 > 0:17:23That's one point each.
0:17:23 > 0:17:25CHEERING
0:17:26 > 0:17:29So the scores now sitting at 2-1 to the Yellows.
0:17:29 > 0:17:30Well done, both teams.
0:17:30 > 0:17:33If there's one thing a lab rat hates more than fresh air,
0:17:33 > 0:17:36it's strenuous exercise, so, of course,
0:17:36 > 0:17:40I've tricked one into doing both of those things at once.
0:17:44 > 0:17:49Karen Oakey was raised by a family of acorns, as an acorn,
0:17:49 > 0:17:53and has always believed that she was, in fact, an acorn.
0:17:53 > 0:17:57But it was only when she fell from the tree and climbed back up
0:17:57 > 0:18:02that she began to realise she wasn't the same as the other acorns.
0:18:04 > 0:18:08With nowhere to live, she said goodbye to her family,
0:18:08 > 0:18:10perhaps for the last time.
0:18:11 > 0:18:14She walked alone for hours and hours -
0:18:14 > 0:18:19well, a couple of minutes - before spotting the answer to her prayers -
0:18:19 > 0:18:21a new home.
0:18:21 > 0:18:27Well, a shed in a field, which I suppose you could kind of live in.
0:18:27 > 0:18:30"What's this got to do with science?", you ask.
0:18:30 > 0:18:31Not a lot, really.
0:18:31 > 0:18:34But what if you find a couple of flying human squirrels
0:18:34 > 0:18:38to race the human acorn to her new home?
0:18:38 > 0:18:40For science reasons, of course.
0:18:46 > 0:18:48Meet the flying squirrels...
0:18:48 > 0:18:52or skydiving men who've drawn the inspiration for their suits
0:18:52 > 0:18:55from their namesakes in nature.
0:18:55 > 0:18:59They've heard there's a giant nut wandering around the fields
0:18:59 > 0:19:02and they are looking for dinner.
0:19:02 > 0:19:03But how do their suits work
0:19:03 > 0:19:07and how are they going to race with our human acorn?
0:19:07 > 0:19:10I think I know an animation who can help.
0:19:10 > 0:19:13Our flying squirrels have suits that create a little upwards lift
0:19:13 > 0:19:15as they fly through the air.
0:19:15 > 0:19:18This makes their fall more controlled,
0:19:18 > 0:19:21meaning they can move sideways as well as down.
0:19:21 > 0:19:24They also have parachutes, so they can slow their fall enough
0:19:24 > 0:19:26not to get hurt when they hit the ground.
0:19:28 > 0:19:30In this race, our slow-moving acorn
0:19:30 > 0:19:33will start from 800m away from the shed, whereas our flying squirrels
0:19:33 > 0:19:38will start from 4km away, as well as 4km up.
0:19:38 > 0:19:41But will the flying squirrels catch the acorn?
0:19:42 > 0:19:47So there we have it, one acorn's race for a new home,
0:19:47 > 0:19:50versus a pair of flying squirrels' race for a meal.
0:19:52 > 0:19:54But who will win?
0:19:56 > 0:20:00OK, hold the experiment right there because there's another point
0:20:00 > 0:20:02up for grabs here. The score right now 2-1.
0:20:02 > 0:20:05This point will go to the team that can tell me most accurately
0:20:05 > 0:20:08will the giant nut make it to the safety of the shed
0:20:08 > 0:20:11before the hungry flying squirrels catch her?
0:20:11 > 0:20:14Simple enough. You've seen what's happening.
0:20:14 > 0:20:17The nut's 800m away from the shed,
0:20:17 > 0:20:20the flying squirrels are 4km away and 4km up.
0:20:20 > 0:20:23They can travel faster, but they've got much further to go.
0:20:23 > 0:20:25Remember, they're 4km up,
0:20:25 > 0:20:27so they'll be using gravity but also the resistance
0:20:27 > 0:20:30of the air, but the suit lets them glide.
0:20:30 > 0:20:32They'll open the parachutes, too.
0:20:32 > 0:20:35Now you know what's happening, what do you think? Reds, you first.
0:20:35 > 0:20:38- Will the nut make it before the squirrels get her?- ALL: No.
0:20:38 > 0:20:40- You think not?- ALL: No. - Yellows, what do you think?
0:20:40 > 0:20:43- ALL: No.- You think not as well.
0:20:43 > 0:20:45So both teams thinking the same thing on this one.
0:20:45 > 0:20:49OK. Well, let's find out if she does. On with the experiment.
0:20:52 > 0:20:55So it all comes down to this one race.
0:20:55 > 0:20:58Acorn versus squirrel, with a twist.
0:21:00 > 0:21:04Karen Oakey is nervous but prepared for what awaits her.
0:21:04 > 0:21:09The squirrels are in the air and eager to jump.
0:21:09 > 0:21:12The conditions look good, let's begin.
0:21:12 > 0:21:15Three, two, one, go!
0:21:16 > 0:21:19The squirrels are out of the plane and flying.
0:21:19 > 0:21:22Karen is off and running.
0:21:22 > 0:21:24The difference in speed is immense,
0:21:24 > 0:21:28but these squirrels have a lot more distance to cover.
0:21:28 > 0:21:31Karen's going as fast as her little acorn legs will carry her...
0:21:33 > 0:21:37..whilst the squirrels are now reaching speeds of over...
0:21:38 > 0:21:42But they still have a long way to go.
0:21:42 > 0:21:46The canopies have now opened on their parachutes.
0:21:46 > 0:21:47But they're still miles out.
0:21:47 > 0:21:51Karen is making slow but steady progress.
0:21:51 > 0:21:54Will she make it to her new house before the squirrels catch her?
0:21:57 > 0:22:02The first squirrel has located the house and is making his landing.
0:22:03 > 0:22:04Touchdown!
0:22:05 > 0:22:07This is not looking good for Karen.
0:22:07 > 0:22:09Where's the acorn? Is she in the house?
0:22:09 > 0:22:11No.
0:22:11 > 0:22:14There she is, making a run for the field.
0:22:14 > 0:22:15Right, after her.
0:22:15 > 0:22:18And now here comes the second squirrel.
0:22:18 > 0:22:22Surely Karen doesn't stand a chance now.
0:22:22 > 0:22:24The first squirrel is closing in
0:22:24 > 0:22:26but the acorn is running for her very life.
0:22:28 > 0:22:30But the acorn's little legs look to be no match
0:22:30 > 0:22:33for the speed of the squirrel.
0:22:34 > 0:22:39Success! Looks like the squirrels are having dinner tonight.
0:22:39 > 0:22:40Poor little acorn.
0:22:40 > 0:22:43That takes the score to 3-2 to the Yellows.
0:22:45 > 0:22:46Luckily for Karen Oakey,
0:22:46 > 0:22:50those squirrels had just buried her feet in the ground
0:22:50 > 0:22:52before they were chased off by a fox.
0:22:52 > 0:22:54Don't worry, I shall rescue her later on, if I remember,
0:22:54 > 0:22:57because now it's time for...
0:23:00 > 0:23:05So, teams, in that tank, along with you, are pieces of a bridge.
0:23:05 > 0:23:08But not just any old bridge - it is the Bridge Of Destiny.
0:23:08 > 0:23:12DEEP VOICE: The Bridge Of Destiny.
0:23:12 > 0:23:16Yeah. You have to find all the pieces you can to make your bridge.
0:23:16 > 0:23:18They're all in there.
0:23:18 > 0:23:20When you've built your bridge, pull that lever.
0:23:20 > 0:23:21That'll release the car
0:23:21 > 0:23:24that pulls your trailer of prizes across the tank.
0:23:24 > 0:23:27It's that simple, that is how you play the Bridge Of Destiny.
0:23:27 > 0:23:31DEEP VOICE: The Bridge Of Destiny.
0:23:31 > 0:23:34OK. And the team that crosses it first will win
0:23:34 > 0:23:37all the prizes in the car's trailer, including a land yacht,
0:23:37 > 0:23:40a brushing robot and a marine copter.
0:23:40 > 0:23:44Let's hope the prizes aren't too heavy for the Bridge Of Destiny.
0:23:44 > 0:23:46- DEEP VOICE:- The Bridge Of Destiny.
0:23:49 > 0:23:51Fair enough. Know what you've got to do?
0:23:51 > 0:23:53When you've built your bridge, pull the handle.
0:23:53 > 0:23:56Yellows, you're in the lead, you have a five-second advantage.
0:23:56 > 0:23:59Reds, go when you hear the second klaxon.
0:23:59 > 0:24:03Right, the race to get your prize pods across the tank starts, mm...
0:24:03 > 0:24:04now!
0:24:06 > 0:24:09The Yellows setting off at a furious pace here.
0:24:09 > 0:24:12There's the second siren and the Reds with it all to do
0:24:12 > 0:24:18as the Yellows have two - no, make that three - bridge pieces in hand.
0:24:18 > 0:24:21And it looks like Katie has already put one in place.
0:24:21 > 0:24:24THEY SHOUT ENCOURAGEMENT
0:24:31 > 0:24:34Confusion reigning in the tank on the red side.
0:24:34 > 0:24:39They're struggling to get off the mark, despite all the shouting.
0:24:41 > 0:24:44And, as if things couldn't get more disgusting out there,
0:24:44 > 0:24:48sounds like Alan's about to grace us with one of his special deliveries.
0:24:48 > 0:24:50And while Alan was distracting us,
0:24:50 > 0:24:53the Yellows have fitted the last piece into place.
0:24:53 > 0:24:56They pull the lever, the car's skidding on the goo
0:24:56 > 0:24:59and it's made it to the line, just.
0:24:59 > 0:25:02A win in record time there. Amazing!
0:25:02 > 0:25:03YELLOW TEAM CHEER
0:25:03 > 0:25:05CHEERING
0:25:05 > 0:25:10That was a close-run thing,
0:25:10 > 0:25:13but, according to the rules, your car has made it across the tank,
0:25:13 > 0:25:16Yellows, you are the winners!
0:25:16 > 0:25:18CHEERING
0:25:18 > 0:25:20Reds, I'm sorry, there were seconds in it.
0:25:20 > 0:25:24So let's see what you've won, Yellows. Are you ready, Ninja Nan?
0:25:24 > 0:25:26Each of you will be taking home a building-block set...
0:25:26 > 0:25:28CHEERING AND APPLAUSE
0:25:28 > 0:25:30..a brush robot...
0:25:30 > 0:25:31CHEERING AND APPLAUSE
0:25:31 > 0:25:33..a land yacht...
0:25:33 > 0:25:35CHEERING AND APPLAUSE
0:25:35 > 0:25:36..a marine copter...
0:25:36 > 0:25:37CHEERING AND APPLAUSE
0:25:37 > 0:25:39..aqua set...
0:25:39 > 0:25:41CHEERING AND APPLAUSE
0:25:41 > 0:25:44- ..a rocket coin bank... - ALL: Wow!
0:25:44 > 0:25:48- ..a transforming robot... - Wow!
0:25:48 > 0:25:51- ..an electronic game. - Oh, my God!
0:25:51 > 0:25:54Oh, yes, quite a haul for each of you.
0:25:54 > 0:25:57It's the time and the part of the show I always regret
0:25:57 > 0:25:58and never enjoy.
0:25:58 > 0:26:00No, wait. I got that the wrong way round.
0:26:00 > 0:26:04I do enjoy it, because it's time for the part of the show I love.
0:26:04 > 0:26:05It is Bidet Goes Bang.
0:26:05 > 0:26:07CHEERING AND APPLAUSE
0:26:13 > 0:26:15Yellows, well done, well played.
0:26:15 > 0:26:18All of this lot coming home with you. That's your haul of prizes.
0:26:18 > 0:26:21- You're all pleased?- ALL: Yeah. - Of course you're pleased,
0:26:21 > 0:26:23that's a stupid question.
0:26:23 > 0:26:27Over here, Reds, you played really well and then you lost.
0:26:27 > 0:26:31I'm really sorry and it was so close at the very end
0:26:31 > 0:26:34and you're not going home with that lot, but don't worry,
0:26:34 > 0:26:36because you will at least get something,
0:26:36 > 0:26:38you'll take something home today.
0:26:38 > 0:26:43A bit of exercise, as you join me on the Walk of Shame.
0:26:43 > 0:26:45Come on, team, this way.
0:26:45 > 0:26:47AUDIENCE: Awww!
0:26:47 > 0:26:50- Aw, I know.- I'm sad.
0:26:53 > 0:26:55It is sad.
0:26:59 > 0:27:01Let's just be brave.
0:27:04 > 0:27:07It's been a journey, an adventure, a voyage,
0:27:07 > 0:27:09with shared experiences and then you lost
0:27:09 > 0:27:12and now you're going to blow your prizes up, simple as that.
0:27:12 > 0:27:15If you'd lift the plunger, please, girls.
0:27:15 > 0:27:18Lift it up, hold it till we're ready. We'll count them down from...
0:27:18 > 0:27:21ALL: Five, four, three, two, one...
0:27:23 > 0:27:24CHEERING AND APPLAUSE
0:27:27 > 0:27:30You've been great sports, Reds.
0:27:30 > 0:27:32Thanks for playing, girls, sorry you didn't win.
0:27:32 > 0:27:35Today we've made hovercrafts from records and chased nuts by air.
0:27:35 > 0:27:37Just another day in the office.
0:27:37 > 0:27:41A gungy, smelly, bangy, science-y sort of office. See you next time.
0:27:41 > 0:27:44CHEERING
0:27:55 > 0:27:58Subtitles by Red Bee Media
0:27:58 > 0:28:01E-mail subtitling@bbc.co.uk