0:00:20 > 0:00:22Operation Ouch.
0:00:23 > 0:00:26'He is Dr Chris.'
0:00:26 > 0:00:28'He's Dr Xand.
0:00:28 > 0:00:30'And yes, we're twins.
0:00:30 > 0:00:33'Do you know how brilliant your body really is?'
0:00:33 > 0:00:34I'm getting better.
0:00:34 > 0:00:36'Well, we're going to show you.'
0:00:36 > 0:00:38Oh, there you go.
0:00:38 > 0:00:41'In this series, we'll be pushing our bodies to their limits.'
0:00:41 > 0:00:43Hello.
0:00:43 > 0:00:45'By doing extraordinary experiments on each other... '
0:00:45 > 0:00:47This is my sick.
0:00:47 > 0:00:49'.To uncover what goes on inside...'
0:00:49 > 0:00:51Ooh, er, that just came out of my ear.
0:00:51 > 0:00:53'..and out.'
0:00:53 > 0:00:54Wow, that's amazing.
0:00:54 > 0:00:56'From the bizarre...'
0:00:56 > 0:00:59Can we get a sample of your snot? HE GROANS
0:00:59 > 0:01:00'..to the incredible.'
0:01:00 > 0:01:02So now I'm seeing things.
0:01:02 > 0:01:05'It's time to find out what you're made of.'
0:01:05 > 0:01:07Chris. Chris. Chris?
0:01:07 > 0:01:08SIREN WAILS
0:01:08 > 0:01:11Coming up today...
0:01:11 > 0:01:12On Operation Ouch.
0:01:15 > 0:01:19'We bare our teeth to see what happens when you don't brush.'
0:01:19 > 0:01:22DR XAND GROANS
0:01:22 > 0:01:26'This man reveals an amazing body.
0:01:26 > 0:01:29'And prepare yourself for the wonders of wee.'
0:01:30 > 0:01:33- It really smells in here. - Yes, it does.
0:01:33 > 0:01:36'But first...'
0:01:36 > 0:01:39Each year, over 18 million incidents mean people end up in
0:01:39 > 0:01:41accident and emergency.
0:01:41 > 0:01:44Let's see how the team fix our first patient.
0:01:46 > 0:01:49'In accident and emergency, four-year-old Didi has
0:01:49 > 0:01:52'come in with his mum and dad because he's in a bit of a fix.'
0:01:52 > 0:01:55- (UNCLEARLY)- I tried to push something up my nose.
0:01:55 > 0:01:57'Say what?'
0:01:57 > 0:02:01I got a call to say he's got a screw up his nose.
0:02:01 > 0:02:03'It's a toy screw, right?'
0:02:03 > 0:02:06No, it's not a toy one. It's an actual screw, yeah.
0:02:06 > 0:02:08'I see.
0:02:08 > 0:02:11'So how on earth did the screw get up there?'
0:02:14 > 0:02:16'Didi and his friend were sitting on a mat at school.
0:02:16 > 0:02:18'Nice mat.'
0:02:18 > 0:02:20'And there was a screw on the mat.
0:02:20 > 0:02:24'Didi loved the look of that screw but so did his friend.'
0:02:24 > 0:02:26'What's the big deal? It's just a screw.'
0:02:26 > 0:02:28'It's not just a screw, Xand.
0:02:28 > 0:02:31'It has a purpose and Didi knew what he had to do.'
0:02:31 > 0:02:33'Repair that desk?'
0:02:33 > 0:02:34'No.'
0:02:34 > 0:02:36'Fix that squeaky window?'
0:02:36 > 0:02:39'No, Xand. He picked up that screw...'
0:02:39 > 0:02:41'I'm on the end of my seat. What did he do?'
0:02:41 > 0:02:44'He put it up his nose because...it fitted.'
0:02:44 > 0:02:46'Oh, bad idea.'
0:02:46 > 0:02:49'Yep, and now it's stuck up there and won't come out.'
0:02:49 > 0:02:51'Ouch.'
0:02:51 > 0:02:55'From the look of him, you wouldn't guess there was a big screw
0:02:55 > 0:02:59'firmly lodged up his left nostril but there is.
0:02:59 > 0:03:02'Now it's over to Dr Mashhood Qazi to get it out.'
0:03:03 > 0:03:06- And, Mum, has he done this before? - No! He hasn't.
0:03:06 > 0:03:09Am I going to find some gold?
0:03:09 > 0:03:12'No, Doc, there's no gold. It's just a screw.'
0:03:12 > 0:03:14Let me see.
0:03:14 > 0:03:17'Dr Mashhood has a look up Didi's nose to see
0:03:17 > 0:03:19'where the screw is hiding.'
0:03:19 > 0:03:20OK.
0:03:20 > 0:03:22Didi's done a terrific job.
0:03:22 > 0:03:27He's got a big screw up his nose, which we need to take out,
0:03:27 > 0:03:30seriously, otherwise it's going to cause a lot of problems.
0:03:30 > 0:03:32'So to get that screw out,
0:03:32 > 0:03:35'the doctor uses a pair of medical tweezers.
0:03:35 > 0:03:38'This might look uncomfortable but if the screw doesn't come out,
0:03:38 > 0:03:41'it could damage Didi's nose and cause an infection.'
0:03:41 > 0:03:45'But it won't budge, so Dr Mashhood changes tack.'
0:03:47 > 0:03:49SHE BLOWS AIR
0:03:49 > 0:03:53'Didi's mum blocks his right nostril then blows into his mouth to
0:03:53 > 0:03:56'try and push the screw back down the left one.
0:03:56 > 0:03:58'But still no luck.
0:03:59 > 0:04:03'So after two failed attempts and the screw wedged well
0:04:03 > 0:04:08'and truly up there, there's only one option left - an operation.
0:04:08 > 0:04:11'We'll be back later to see how Didi gets on.'
0:04:16 > 0:04:18'And now to our lab...
0:04:18 > 0:04:20Whoa.
0:04:20 > 0:04:22'..where we do incredible experiments.'
0:04:22 > 0:04:23Ugh, it's disgusting.
0:04:23 > 0:04:25'To show you how your body works.'
0:04:25 > 0:04:28It's not pretty to look at but it is brilliant stuff.
0:04:28 > 0:04:31'Just don't try anything you see here at home.'
0:04:31 > 0:04:33Take a look at this.
0:04:34 > 0:04:37It's a skull that's over 100 years old.
0:04:37 > 0:04:40Now, it's from a five-year-old, but look carefully
0:04:40 > 0:04:43and you'll see why I really wanted to show it to you.
0:04:43 > 0:04:49'This skull has two sets of teeth. These are milk teeth.
0:04:49 > 0:04:51'And these are the adult teeth.
0:04:51 > 0:04:55'They're waiting to come through when the milk teeth fall out.
0:04:55 > 0:04:59'But what's amazing about this, is that it's not amazing at all.'
0:04:59 > 0:05:02If you're still waiting for your adult teeth, just think,
0:05:02 > 0:05:05they're already in your head fully grown.
0:05:05 > 0:05:09Underneath your skin, your skull will look just like this one.
0:05:09 > 0:05:12Both sets of teeth are coated with enamel.
0:05:12 > 0:05:14It's the hardest substance in your body.
0:05:14 > 0:05:17It's even harder than bone but it's not indestructible.
0:05:17 > 0:05:19As we're about to find out.
0:05:23 > 0:05:25HE BREATHES
0:05:25 > 0:05:27DR XAND GASPS AND GROANS
0:05:27 > 0:05:30- Does my breath smell bad? - Yes, it does actually.
0:05:30 > 0:05:33I'm not surprised. I haven't brushed my teeth in two days.
0:05:33 > 0:05:36But it's all for a good cause. Isn't it, Chris?
0:05:36 > 0:05:38I hope so.
0:05:38 > 0:05:40'In fact, it was my idea.
0:05:40 > 0:05:44'Whilst I've been brushing my teeth twice a day, as you should,
0:05:44 > 0:05:47'I haven't let Chris brush his at all for two days.
0:05:47 > 0:05:50'But it's all in the name of medical research.'
0:05:50 > 0:05:52My teeth feel fuzzy.
0:05:52 > 0:05:56That's because Chris has a layer of plaque building up on them.
0:05:56 > 0:05:57Open wide.
0:05:57 > 0:06:01'I'm going to show you why plaque isn't something you want a lot of.
0:06:01 > 0:06:04'When you go to the dentist, you'll have had your teeth
0:06:04 > 0:06:06'scraped like this.'
0:06:06 > 0:06:09- Going anywhere nice on holiday this year, Chris?- No.
0:06:09 > 0:06:12Oh lovely, I've been there. It's wonderful at this time of year.
0:06:12 > 0:06:15Ugh, Chris, this is disgusting.
0:06:17 > 0:06:21Plaque is a mixture of food particles, acid and bacteria.
0:06:21 > 0:06:25We've all got thousands of different bacteria living in our mouths
0:06:25 > 0:06:28and most of them are harmless but there are some bad ones that
0:06:28 > 0:06:31can turn the sugars in the food we eat into acid.
0:06:31 > 0:06:35'And it's this plaque acid that's the real problem.'
0:06:35 > 0:06:38It eats away at the tooth enamel and that's what tooth decay is.
0:06:38 > 0:06:41Please can I have my toothbrush back now?
0:06:41 > 0:06:43Soon. There's more to show you.
0:06:43 > 0:06:47'We're both going to rinse our mouths with a special blue dye
0:06:47 > 0:06:51'that will show up how much plaque we have on our teeth.
0:06:51 > 0:06:53'It's my brushed gnashers first.
0:06:53 > 0:06:55'Ta-da.'
0:06:55 > 0:06:58- You look really funny. - You look funny.
0:06:58 > 0:07:01'Now even though Xand has been brushing regularly,
0:07:01 > 0:07:05'you can see some dye has stuck to his teeth and that's all plaque.'
0:07:05 > 0:07:06That makes me a bit worried
0:07:06 > 0:07:09cos I haven't brushed my teeth for over two days.
0:07:09 > 0:07:11- Ugh, why did you do that? - It was your idea.
0:07:14 > 0:07:18'Well, after a quick rinse with the blue dye it's time to
0:07:18 > 0:07:21'check out the state of my un-brushed teeth.'
0:07:21 > 0:07:28Ugh, there's plaque everywhere. How did you let this happen?
0:07:28 > 0:07:30RECORD SCRATCH
0:07:30 > 0:07:34So if you compare my lovely clean brushed teeth with Chris's
0:07:34 > 0:07:38disgusting, un-brushed teeth, you can really see the difference.
0:07:38 > 0:07:41And all that plaque has built up in just two days.
0:07:41 > 0:07:42That's gross.
0:07:42 > 0:07:46- I feel quite disgusting. I would like my toothbrush back.- No.
0:07:46 > 0:07:49'I want to get a much closer look at your plaque, Chris,
0:07:49 > 0:07:53'which is why I've put a dollop of it under this microscope.'
0:07:53 > 0:07:56- Look at this.- Wow.
0:07:56 > 0:07:59So these bacteria are the ones that live in my plaque
0:07:59 > 0:08:02and although we can't tell which are the good ones
0:08:02 > 0:08:04and which are the bad ones, some of them
0:08:04 > 0:08:08are the ones that produce the acid that is rotting my teeth right now.
0:08:08 > 0:08:11Yep, and if you just leave plaque it hardens like cement.
0:08:11 > 0:08:15That's called tartar, and it builds and builds.
0:08:15 > 0:08:20It can damage your gums and give you rotting teeth that look like this.
0:08:21 > 0:08:23Not a good look.
0:08:23 > 0:08:27That's it, I've had enough. I am going to brush my teeth.
0:08:27 > 0:08:28No, he's not.
0:08:35 > 0:08:38The kitchen. For you, it may be the best room in the house
0:08:38 > 0:08:40with its stainless steel work surfaces,
0:08:40 > 0:08:43its fancy oven with two kinds of heat
0:08:43 > 0:08:47and top-of-the-range refrigerator stocked full of goodies.
0:08:47 > 0:08:50But the kitchen can also be a place of danger.
0:08:51 > 0:08:54- Can't it, Xand?- Yes.
0:08:54 > 0:08:56Is that a fake comedy knife?
0:08:56 > 0:08:58Yes.
0:08:58 > 0:09:02Good, because knives can be dangerous and could cause a bad cut.
0:09:06 > 0:09:07Is that a comedy fake hand?
0:09:07 > 0:09:09Yes.
0:09:09 > 0:09:12Good, because we need safety in the kitchen at all times.
0:09:12 > 0:09:14Now let's relax with a nice cup of tea.
0:09:14 > 0:09:16Ooh, I'll get it. KETTLE WHISTLES
0:09:16 > 0:09:18Isn't that nice of him?
0:09:18 > 0:09:20Ooh, hold on. The water, it's boiling...
0:09:20 > 0:09:22- DR XAND SCREAMS - Hot.
0:09:24 > 0:09:26Xand, is that a comedy burnt finger?
0:09:26 > 0:09:29No, it's a minor injury.
0:09:33 > 0:09:36'So what should you do if you get a burn?
0:09:36 > 0:09:39'Should you - A - hop up and down and tap it with a wand?
0:09:40 > 0:09:43'B - ask it politely to stop hurting?
0:09:44 > 0:09:48'C - run it under cold water?'
0:09:48 > 0:09:50'Oh, I do like magic, I hope it's option A.'
0:09:52 > 0:09:55The answer is C.
0:09:57 > 0:09:59'So to treat a burn...'
0:09:59 > 0:10:01Run it under the cold tap as quickly as possible
0:10:01 > 0:10:04and keep it there for a good ten minutes to cool the burn down.
0:10:04 > 0:10:06Right, job done.
0:10:06 > 0:10:09- Oh, can we have that cup of tea now? - Yeah, come on.
0:10:12 > 0:10:14LOUD TRUMP OF WIND
0:10:14 > 0:10:17Was that a comedy whoopee cushion making that noise?
0:10:17 > 0:10:19Yes.
0:10:19 > 0:10:21WIND CONTINUES
0:10:21 > 0:10:25'So remember, run a burn under a cold tap for ten minutes
0:10:25 > 0:10:28'but if you're worried, tell an adult.'
0:10:32 > 0:10:34'We've got some incredible body tricks
0:10:34 > 0:10:36'for you to show your friends.'
0:10:36 > 0:10:39'Want to find out how you can stop your mates from simply
0:10:39 > 0:10:41'picking up something off the floor?'
0:10:41 > 0:10:43'We're going to show you.'
0:10:43 > 0:10:46- Xand, to do this trick, I'm going to need some money.- Oh, all right.
0:10:46 > 0:10:49It's my lunch money. I'm going to need it back.
0:10:49 > 0:10:51Well, I tell you what, you can have it back
0:10:51 > 0:10:55if you can pick it up off the floor. If you don't pick it up, I get it.
0:10:55 > 0:10:56Sounds quite easy.
0:10:59 > 0:11:03Got it. That was a rubbish trick. Who thinks that was a rubbish trick?
0:11:03 > 0:11:05KIDS: Me.
0:11:05 > 0:11:07All right, well, we'll do it again.
0:11:07 > 0:11:09This time you won't be able to pick up the money.
0:11:09 > 0:11:11So go and stand against the wall.
0:11:11 > 0:11:13Now, keeping your feet where they are,
0:11:13 > 0:11:16I just want you to bend down to pick up the money.
0:11:17 > 0:11:19Come on, Xand, pick it up.
0:11:19 > 0:11:21Chris, what have you done?
0:11:21 > 0:11:24Ah, I can't get it.
0:11:24 > 0:11:25That's hard.
0:11:25 > 0:11:28So it looks like I get the lunch money, doesn't it?
0:11:28 > 0:11:30KIDS BOO
0:11:33 > 0:11:36'Come on, then, let's see if anyone else can do it.
0:11:38 > 0:11:39'He can't.
0:11:41 > 0:11:44'She definitely can't.
0:11:45 > 0:11:49'So why can't anyone, including Xand, pick up the money?'
0:11:49 > 0:11:51When you bend over, your bum pushes back
0:11:51 > 0:11:55and the wall's stopping it from pushing back.
0:11:55 > 0:11:57'George has got it.
0:11:57 > 0:12:01'Normally when you bend over to pick something up, your body will
0:12:01 > 0:12:06'adjust itself backwards in order to balance it out.
0:12:06 > 0:12:09'So when your body's flat against the wall, you can't go backwards
0:12:09 > 0:12:12'and there's no chance of picking up that money.
0:12:12 > 0:12:14'All you can do is fall forwards.'
0:12:14 > 0:12:18So I'm going to need the money back from all of you guys.
0:12:18 > 0:12:19KIDS SHOUT
0:12:19 > 0:12:21Give my money back! Come on, Xand.
0:12:27 > 0:12:29Remember Didi who had a screw lodged up his nose?
0:12:29 > 0:12:31Let's head back to accident and emergency
0:12:31 > 0:12:33to find out how he's getting on.
0:12:35 > 0:12:39'Back in Manchester, four-year-old Didi is in hospital with
0:12:39 > 0:12:42'a large screw wedged up his nose.
0:12:43 > 0:12:45'He'd been playing with his friend
0:12:45 > 0:12:48'when they saw a shiny screw on the mat.
0:12:48 > 0:12:51'Didi loved the look of that screw but so did his friend.
0:12:51 > 0:12:53'They both wanted that screw
0:12:53 > 0:12:56'and it was at this point Didi came up with a great idea.
0:12:56 > 0:12:59'He picked the screw up and hid it up his nose.
0:12:59 > 0:13:01'Only it wouldn't come out again
0:13:01 > 0:13:04'and it's evaded all attempts to catch it.'
0:13:05 > 0:13:09'So now it's over to the surgical team to get that screw loose.
0:13:09 > 0:13:12'Didi's had a general anaesthetic to put him to sleep.
0:13:12 > 0:13:16'This means the surgical team can delve deeper into his nose
0:13:16 > 0:13:20'and pull the hiding screw out without him feeling a thing.
0:13:20 > 0:13:22'So here goes.
0:13:24 > 0:13:28'With Didi totally still, it's not long before the surgeon
0:13:28 > 0:13:30'catches up with that screw.
0:13:32 > 0:13:34'At last, it's out.
0:13:37 > 0:13:39- It's big.- 'Yep, it's a whopper.'
0:13:39 > 0:13:41How did he manage to get it up his nose?
0:13:41 > 0:13:43'Who knows? But a couple of hours later
0:13:43 > 0:13:47'and Didi has come around from his operation to the good news.'
0:13:47 > 0:13:51That was in my nose cos I was pushing it in.
0:13:51 > 0:13:54'Well hopefully nothing will be going up your nostrils
0:13:54 > 0:13:56'in the future.
0:13:56 > 0:13:58'And with his conk clear, he's off home.'
0:13:59 > 0:14:01'Bye.'
0:14:05 > 0:14:07'Still to come...
0:14:07 > 0:14:09'Xand's got a foot that needs freezing.
0:14:10 > 0:14:13'Evie's got a gash that needs gluing.'
0:14:14 > 0:14:17'And I've got wee with secret powers.'
0:14:18 > 0:14:21That really works well.
0:14:21 > 0:14:25'Now, did you know that the average eyebrow has 450 hairs?'
0:14:25 > 0:14:30'Wow, that's amazing. And so's this.
0:14:32 > 0:14:34'On an ordinary street.
0:14:35 > 0:14:37'In an ordinary house.
0:14:39 > 0:14:42'One man is getting ready for his day.
0:14:42 > 0:14:43'Nice towel.
0:14:43 > 0:14:44'Lovely.
0:14:46 > 0:14:48'He likes a blow dry, then?
0:14:48 > 0:14:51'Hang on a minute. Is he drying his face?'
0:14:51 > 0:14:53'Oh, yes. Check this out!
0:14:58 > 0:15:02'Meet Jesus Aceves. He has an amazing body.
0:15:02 > 0:15:07'Jesus has over 60,000 hairs on his face.
0:15:07 > 0:15:09'This is no more than the average man
0:15:09 > 0:15:12'but whereas we will have tiny, fine facial hairs,
0:15:12 > 0:15:17'incredibly Jesus' hairs are long and dark like the hair on his head.
0:15:17 > 0:15:20'So what makes his amazing body like this?
0:15:20 > 0:15:24'Well, Jesus has had his hairy face since birth
0:15:24 > 0:15:27'and it's down to a genetic condition called hypertrichosis.
0:15:29 > 0:15:32'Before we're born, we're all covered with a layer of fine hair
0:15:32 > 0:15:35'which normally disappears about a month before we burst out
0:15:35 > 0:15:38'but hypertrichosis means the hair continues to
0:15:38 > 0:15:40'grow in unexpected places.
0:15:42 > 0:15:46'His furry face keeps him toasty warm in winter and come summertime
0:15:46 > 0:15:51'he treats his luscious locks to a trim to keep himself cool.
0:15:52 > 0:15:56'Jesus is one of only 50 people in the world who have
0:15:56 > 0:15:59'super hairy faces.
0:15:59 > 0:16:01'Now that's amazing.'
0:16:09 > 0:16:11'Your body can need mending in all sorts of ways and
0:16:11 > 0:16:15'we're going to meet some special teams that are trained to fix you.'
0:16:15 > 0:16:17SHE LAUGHS
0:16:17 > 0:16:19'This is Rocco.
0:16:19 > 0:16:22'He's come to see a foot doctor today, and so have I.'
0:16:22 > 0:16:24Take a look at my feet.
0:16:24 > 0:16:29They look OK, don't they, in a sort of foot-ish way. But look closer.
0:16:29 > 0:16:31'Meet my verrucas.
0:16:31 > 0:16:34'We've actually become quite attached.'
0:16:34 > 0:16:37Verrucas are caused by a virus - the human papillomavirus.
0:16:37 > 0:16:40They're rough mounds of skin that grow on the bottom
0:16:40 > 0:16:43of your feet where it's nice and warm.
0:16:43 > 0:16:45'I've had these ones for a while.'
0:16:45 > 0:16:46But enough is enough.
0:16:48 > 0:16:51'This is Nutan Shah.
0:16:51 > 0:16:54'A podiatrist, or foot doctor, at the London Podiatry Centre.
0:16:54 > 0:16:57'She knows everything about verrucas.'
0:16:57 > 0:17:00Why do they stick around so long?
0:17:00 > 0:17:02They like warm, dark, moist places,
0:17:02 > 0:17:05so your foot is an ideal place for it to live in.
0:17:05 > 0:17:08Basically the verrucas are saying my foot's good?
0:17:08 > 0:17:10- It's like a five-star hotel. - HE LAUGHS
0:17:10 > 0:17:13'Well it's time for these guests to check out.
0:17:15 > 0:17:19'First, Nutan has to cut off all the dead hard skin.'
0:17:19 > 0:17:20This bit doesn't hurt at all.
0:17:20 > 0:17:23It's slightly ticklish but it's actually quite pleasant.
0:17:23 > 0:17:26So long, verruca!
0:17:26 > 0:17:29'Now my foot's going to get frozen.
0:17:29 > 0:17:34'This is liquid nitrogen which helps kill off the virus.'
0:17:34 > 0:17:37Now it is quite painful. It stings.
0:17:37 > 0:17:40'Liquid nitrogen is extremely cold.
0:17:40 > 0:17:43'Minus 200 degrees centigrade, to be precise.
0:17:43 > 0:17:47'That's at least ten times colder than your freezer at home.
0:17:47 > 0:17:50'And with a few treatments, your verrucas are no more.
0:17:51 > 0:17:55'With the freezing over, Nutan puts silver nitrate on.
0:17:55 > 0:17:58'It stops any blistering and also helps kill the virus.'
0:17:58 > 0:18:01What we do is, we just rub it on to the area
0:18:01 > 0:18:04and eventually it will go black.
0:18:04 > 0:18:09'Like Rocco's. He's already had a few verruca treatments.'
0:18:09 > 0:18:12How do verrucas feel on your foot? Do you notice them?
0:18:12 > 0:18:15At first, when I used to step on the ground without
0:18:15 > 0:18:17any shoes, it really started hurting me.
0:18:17 > 0:18:21Cos that's what I noticed, with shoes on, it's not really a problem.
0:18:21 > 0:18:24'It's important to remember that this virus is contagious.
0:18:24 > 0:18:25'So don't touch it.
0:18:25 > 0:18:29'Don't pick it and make sure you don't walk around anywhere
0:18:29 > 0:18:31'barefoot, or you'll spread it.
0:18:32 > 0:18:36'Now, brace yourself, Rocco, here comes the liquid nitrogen.'
0:18:36 > 0:18:38HE GASPS
0:18:38 > 0:18:40'Yep, takes your breath away.'
0:18:40 > 0:18:42You've got a really good technique.
0:18:42 > 0:18:44- Like you're just laughing through it, right?- Yeah.
0:18:44 > 0:18:49'So, freezing over, there's a coat of silver nitrate.
0:18:49 > 0:18:51'And we're both all done.'
0:18:51 > 0:18:55If you've got a verruca that won't go away, people like Nutan
0:18:55 > 0:18:59are here to help. But remember, lots of verrucas do go away on their own.
0:18:59 > 0:19:00It might just take a while.
0:19:00 > 0:19:03So, in the meantime, why not give it a name?
0:19:03 > 0:19:05Mine's called Dr Chris.
0:19:05 > 0:19:06Just don't tell him.
0:19:10 > 0:19:14When you get injured, your body is brilliant at mending itself.
0:19:14 > 0:19:18This next boy should know, he's always having accidents.
0:19:18 > 0:19:21# If there's a bone to break he'll break it
0:19:21 > 0:19:24# If there's a wound to graze, he'll graze it
0:19:24 > 0:19:26# If there's an ankle to sprain, he'll sprain it
0:19:26 > 0:19:28# He's the unluckiest kid. #
0:19:31 > 0:19:32'Look out for that squirrel.
0:19:32 > 0:19:34LOUD CRASH
0:19:34 > 0:19:36'When you break your arm, it's called a fracture.
0:19:36 > 0:19:39'And it gets put in plaster to keep it in place.
0:19:39 > 0:19:42'But underneath, the real fixing is done by you.'
0:19:42 > 0:19:43'Wow.'
0:19:43 > 0:19:47'Your broken bone leaks blood and it contains special building blocks,
0:19:47 > 0:19:51'including fibres from proteins called collagen and cartilage.
0:19:55 > 0:19:59'They build a temporary bridge called a callous
0:19:59 > 0:20:02'and it stays in place for about three weeks.
0:20:02 > 0:20:06'Then a specialist team called the osteoblasts move in.
0:20:06 > 0:20:10'These are cells that make tiny bits of bone that set like cement.'
0:20:10 > 0:20:13'After a few weeks, your bones have repaired themselves.
0:20:13 > 0:20:16'Your cast will be off and you're as good as new.
0:20:16 > 0:20:18'Just watch out for squirrels.'
0:20:18 > 0:20:20'Uh-oh. Oh, dear!'
0:20:20 > 0:20:22# He's the unluckiest kid. #
0:20:22 > 0:20:25Now sometimes on Operation Ouch what we really...
0:20:25 > 0:20:27What are you doing?
0:20:27 > 0:20:30- I'm holding it in. - Why didn't you go before I started?
0:20:30 > 0:20:33- Because I need it for this week's Investigation Ouch.- Oh.
0:20:41 > 0:20:43Now, I know what you're thinking.
0:20:43 > 0:20:46You should have flushed the toilet, Dr Chris.
0:20:46 > 0:20:50Well, you're wrong. I didn't use the toilet.
0:20:50 > 0:20:51But I am going to wash my hands.
0:20:53 > 0:20:56'I'm actually taking my wee to Bristol.'
0:20:56 > 0:20:59It's here somewhere. Can you get out the map?
0:20:59 > 0:21:02'Because apparently it contains hidden powers.'
0:21:04 > 0:21:06This is the Bristol Robotics Laboratory
0:21:06 > 0:21:09and some scientists here have decided that, rather than
0:21:09 > 0:21:12flushing their wee down the toilets, they're going to use it as a power
0:21:12 > 0:21:16source, and that's why I've brought mine all the way from London.
0:21:16 > 0:21:19I suppose I could've just gone when I got here.
0:21:23 > 0:21:25Come on, wee-wee.
0:21:26 > 0:21:29'We're off to meet Dr Ioannis Ieropoulous.
0:21:29 > 0:21:32'He's the brains behind pee power.'
0:21:32 > 0:21:34So, Ioannis, I've got something for you.
0:21:34 > 0:21:37- Oh, wow. Thank you very much, Chris. - It's my pleasure.
0:21:37 > 0:21:41The first thing to say about being here is it really smells in here.
0:21:41 > 0:21:43Yes, it does.
0:21:43 > 0:21:45It's basically a bit like, imagine instead of leaving
0:21:45 > 0:21:48your classroom to go and pee, everyone just peed on the floor.
0:21:48 > 0:21:51That's a bit like what it smells like.
0:21:51 > 0:21:54But you're putting the wee here to slightly better use, aren't you?
0:21:54 > 0:21:58Yes. So we use urine as a fuel for electricity.
0:22:00 > 0:22:04'Yep, you heard right. They're turning wee into electricity.'
0:22:05 > 0:22:06So how do you do that?
0:22:06 > 0:22:09So we will take this urine
0:22:09 > 0:22:14and we will add it into microbial fuel cells which are something like
0:22:14 > 0:22:18batteries, only they have living micro-organisms inside, living bugs.
0:22:18 > 0:22:22'The bugs living in the microbial fuel cells, or batteries,
0:22:22 > 0:22:26'feed on the sugars and proteins in urine, breaking it down.
0:22:26 > 0:22:28'And this process creates electricity.
0:22:31 > 0:22:34'In fact, this four litres of wee could create enough power for
0:22:34 > 0:22:37'20 minutes of talk time on a mobile phone,
0:22:37 > 0:22:39'but that's not all it can do.
0:22:41 > 0:22:44'Time to see my wee in action.'
0:22:46 > 0:22:48So this is basically a battery, is that right?
0:22:48 > 0:22:52- Yes, a very complicated one. - And what do you use it to power?
0:22:52 > 0:22:56At the moment, we use it to power a remote controlled car.
0:22:56 > 0:22:58- A remote controlled car?- Yeah.
0:22:58 > 0:23:00That's quite cool, I love remote controlled cars.
0:23:02 > 0:23:06'To get the car moving, we first need to top up the battery.'
0:23:06 > 0:23:09So each one of these things that I'm putting the urine into
0:23:09 > 0:23:12is a microbial fuel cell and there are bacteria in there
0:23:12 > 0:23:15that are going to eat the sugars and proteins in the urine
0:23:15 > 0:23:19and turn them into electricity which is then going to charge this car.
0:23:24 > 0:23:26- HE LAUGHS - That really works well.
0:23:26 > 0:23:30'At the moment, it takes a very large battery to power a
0:23:30 > 0:23:34'very little car but hopefully, it won't be long before the batteries
0:23:34 > 0:23:37'get smaller and the things they can power get bigger.'
0:23:39 > 0:23:42Ioannis, so that is amazing. But what's the future?
0:23:42 > 0:23:45Well, the future is about developing the technologies that can be
0:23:45 > 0:23:49implemented into developing world countries and provide electricity.
0:23:49 > 0:23:54It's basically one wonderful way of turning waste into something useful.
0:23:56 > 0:23:59'So hopefully one day urine will create power for people in
0:23:59 > 0:24:03'developing countries to light their homes and cook their food with.'
0:24:03 > 0:24:06Obviously this doesn't mean that you can go and pour urine into all
0:24:06 > 0:24:09the electronic kit in your house and expect it to work.
0:24:09 > 0:24:12That would be both incredibly dangerous and very, very smelly.
0:24:12 > 0:24:15But what we have seen is that scientists have invented
0:24:15 > 0:24:17a way of producing power from urine.
0:24:17 > 0:24:21Now if they can only invent a way of getting rid of the smell.
0:24:26 > 0:24:29Our next patient was expecting a normal day.
0:24:29 > 0:24:31But she's ended up in accident and emergency.
0:24:31 > 0:24:33Let's see her get fixed.
0:24:36 > 0:24:39'In Sheffield accident and emergency, eight-year-old Evie has
0:24:39 > 0:24:43'arrived with her mum and a rather nasty looking cut to her chin.
0:24:44 > 0:24:47'Oh, catch that drip.'
0:24:47 > 0:24:49It stings a lot.
0:24:49 > 0:24:52'I bet it does. What on earth happened?
0:24:52 > 0:24:56'She's in her wellies, is that a clue? Let's find out.'
0:24:58 > 0:25:00'Evie lives on a farm.
0:25:00 > 0:25:02'On a farm? What animals does she have?'
0:25:02 > 0:25:08'She's got a pet donkey. Two sheep. Five horses.
0:25:08 > 0:25:09'Three cats and two dogs.
0:25:09 > 0:25:12'Awesome. So what happened to her chin?'
0:25:12 > 0:25:15'Keep quiet and I'll tell you.
0:25:15 > 0:25:16'It was snowing.
0:25:16 > 0:25:18'Whoa, indeed it was.'
0:25:18 > 0:25:20'Evie decided to go sledging.
0:25:20 > 0:25:21'She was bombing down a hill.
0:25:21 > 0:25:24'She's going very fast.'
0:25:24 > 0:25:27'Yes. And then a huge gust of wind blew her sledge away.'
0:25:27 > 0:25:29'Oh, no!'
0:25:29 > 0:25:32'She landed face first and her chin scraped along the snow
0:25:32 > 0:25:35'and gravel beneath until she stopped.'
0:25:35 > 0:25:37'Ouch!'
0:25:37 > 0:25:41The snow wasn't as thick as I thought it was.
0:25:42 > 0:25:46'Never mind, here's Dr Suzanne Baron to take a look at that chin.'
0:25:48 > 0:25:49Quite a gash this, actually.
0:25:49 > 0:25:51- 'I'll say.- Say what?
0:25:51 > 0:25:54'That it's quite a gash, duh!'
0:25:55 > 0:25:59She's got a medium-sized cut under her chin which will definitely
0:25:59 > 0:26:02need some cleaning and bringing the edges back together again.
0:26:02 > 0:26:06'So, first the mission is to give Evie's wound a good clean
0:26:06 > 0:26:09'and get all the gravel out that they can see.
0:26:09 > 0:26:12'The skin on our chin has five layers for a piece of grit
0:26:12 > 0:26:14'to get lost in.
0:26:14 > 0:26:17'The combination of skin, fat, fibrous tissue
0:26:17 > 0:26:19'and blood cells surrounds our skull.
0:26:19 > 0:26:22'When these layers are broken, dangerous infection can occur.
0:26:22 > 0:26:25'So it's important that we get that bit of grit out of Evie's chin
0:26:25 > 0:26:29'and close up the hole.
0:26:29 > 0:26:32'There's one stubborn bit of grit that just won't budge.
0:26:33 > 0:26:39'Step up Nurse Susan Musson, grit extractor extraordinaire.
0:26:39 > 0:26:41'If you're squeamish, look away now
0:26:41 > 0:26:45'because to get a grip on that gravel she's using a needle.
0:26:45 > 0:26:47I use just the very end of the needle,
0:26:47 > 0:26:49just to keep flicking it out.
0:26:49 > 0:26:52Eventually I got to the end of it and got it all out.
0:26:52 > 0:26:54Yeah, it's come out.
0:26:54 > 0:26:56'Well done, Susan.
0:26:56 > 0:27:00'With the grit gone, steri-strips and glue hold the cut together
0:27:00 > 0:27:01'until it heals.
0:27:01 > 0:27:04That's all done. Does that feel all right? Well done.
0:27:04 > 0:27:06That was very brave.
0:27:06 > 0:27:08'And will brave Evie keep on sledging?'
0:27:08 > 0:27:14Yeah. I'll probably go on the deeper snow in the deeper fields now.
0:27:14 > 0:27:17'Good plan, Evie. You've got true grit.'
0:27:17 > 0:27:19'Very funny, Chris.
0:27:19 > 0:27:20'Bye.'
0:27:23 > 0:27:26'Next time, I'm on an emergency mission.'
0:27:26 > 0:27:28There isn't any time to lose.
0:27:28 > 0:27:31We've got to get the blood where it's needed as quickly as possible.
0:27:31 > 0:27:34'This guy reveals an amazing body skill.
0:27:35 > 0:27:38'And find out what happens when you puke.'
0:27:38 > 0:27:41THEY BOTH GROAN
0:27:41 > 0:27:44- We'll see you next time for more... - Operation Ouch.
0:27:58 > 0:28:01Subtitles by Red Bee Media Ltd