0:00:02 > 0:00:03BELL RINGS
0:00:03 > 0:00:06Urgh! How can Ms Hucklebuck have so much stuff?
0:00:06 > 0:00:11- Maybe she just really likes boxes. - I wish she liked smaller boxes.
0:00:11 > 0:00:15Jonathan, can you pop upstairs, please?
0:00:15 > 0:00:19My telephone doesn't seem to be working. Hello?
0:00:19 > 0:00:21- Oh. Will do, Ms Hucklebuck. - Hello? Hello?
0:00:21 > 0:00:24And by the way, my name is Colin.
0:00:24 > 0:00:26- BELL RINGS - Positions, everyone.
0:00:26 > 0:00:29This is Brain Freeze!
0:00:29 > 0:00:32With Dr Knowles...
0:00:32 > 0:00:35Professor McCork...
0:00:35 > 0:00:38Colin the floor manager...
0:00:38 > 0:00:40and Ms Hucklebuck.
0:00:40 > 0:00:42Stand by!
0:00:42 > 0:00:44Come on, everybody!
0:00:47 > 0:00:48BOTH: It's time for...
0:00:51 > 0:00:53Today, we're asking...
0:00:56 > 0:00:58Strength can be measured in a number of ways.
0:00:58 > 0:01:01Diamond is the hardest natural material,
0:01:01 > 0:01:03and is very difficult to scratch.
0:01:03 > 0:01:07However, if you smash a diamond with a hammer, it will fracture.
0:01:07 > 0:01:10On the other hand, super strong steel is known for its amazing
0:01:10 > 0:01:14tensile strength, meaning it can resist being pulled or stretched.
0:01:14 > 0:01:18But there are some materials in nature that are even stronger.
0:01:18 > 0:01:20What?!
0:01:20 > 0:01:23Spider silk has incredible tensile strength
0:01:23 > 0:01:26and, relative to its size, is actually stronger than steel.
0:01:26 > 0:01:28Whoa, that's amazing!
0:01:28 > 0:01:30There couldn't be anything stronger than that.
0:01:30 > 0:01:34I wouldn't be so sure. See you after this break.
0:01:35 > 0:01:37And we're clear!
0:01:37 > 0:01:40Oh. I mean, really! What's in these things?
0:01:40 > 0:01:43Yeah, I've got my suspicions about this one, all right.
0:01:43 > 0:01:46FRANTIC YAPPING INSIDE
0:01:46 > 0:01:48Hello!
0:01:48 > 0:01:50Hello, Ms Hucklebuck! It's Colin...
0:01:50 > 0:01:52BOINGING AND WHIZZING
0:01:52 > 0:01:55Well, I did not expect to see that!
0:01:55 > 0:01:57Wait 'til the others find out about this.
0:01:57 > 0:02:00- BELL RINGS - Oh, crumpets! Positions!
0:02:06 > 0:02:07So, tell us, Dr Knowles,
0:02:07 > 0:02:10what is the world's strongest natural material?
0:02:10 > 0:02:14- The world's strongest natural material isn't diamond.- No.
0:02:14 > 0:02:15- Or steel.- No.
0:02:15 > 0:02:17Or even spider silk!
0:02:17 > 0:02:19Oh, please tell us! Please tell us, Dr Knowles.
0:02:19 > 0:02:21It's limpet teeth!
0:02:22 > 0:02:23Limpet teeth!
0:02:23 > 0:02:25Limpet...
0:02:25 > 0:02:26t...teeth?
0:02:26 > 0:02:27That's a joke, right?
0:02:27 > 0:02:31Limpets are a type of sea snail that look like barnacles.
0:02:31 > 0:02:34They feed on algae by scraping along rock surfaces
0:02:34 > 0:02:36with a tongue-like structure called a radula.
0:02:36 > 0:02:40Their radula contains tiny microscopic teeth
0:02:40 > 0:02:44which are made of composite fibres that are both hard and tough,
0:02:44 > 0:02:46making for a phenomenal grip.
0:02:47 > 0:02:49By studying these incredible creatures,
0:02:49 > 0:02:53scientists are learning new ways to build structures in the human world.
0:02:53 > 0:02:56This process is called bioinspiration.
0:02:56 > 0:02:58Bioinspiration!
0:02:58 > 0:02:59That's brilliant.
0:02:59 > 0:03:01We can all learn something from that.
0:03:01 > 0:03:04- See you next time! - Bye-bye, limpet fans!
0:03:06 > 0:03:10Ohhh... I feel like I'm going round in circles here.
0:03:10 > 0:03:13I could have sworn I carried this box in already.
0:03:13 > 0:03:17Ach, I know what you mean, Doctor! It feels very repetitive.
0:03:17 > 0:03:18CRASH
0:03:18 > 0:03:22Hang on! I've been moving all these boxes from here to there.
0:03:22 > 0:03:26And I've been moving all those boxes from there to here.
0:03:26 > 0:03:28Oh, don't tell me...
0:03:28 > 0:03:30Oh, 'fraid so, Dr Knowles.
0:03:30 > 0:03:33- Sorry.- Ohhh...
0:03:33 > 0:03:35It's going to be a long night.
0:03:35 > 0:03:39Er, Jonathan! You will keep it to yourself about...
0:03:39 > 0:03:43You know, what you saw earlier, won't you?
0:03:43 > 0:03:46Absolutely, Ms Hucklebuck. Mum's the word.
0:03:46 > 0:03:49And would you be a dear and pop back up when you get a sec?
0:03:49 > 0:03:52My computer seems to be running a bit slow...
0:03:52 > 0:03:54Oh, crumpets...
0:03:54 > 0:03:56- I've read the manual and... - Yes, Ms Hucklebuck.