WEBVTT 00:04.000 --> 00:09.385 Welcome to the Why Lab! Today there is a curious clanging sound. 00:09.400 --> 00:12.145 Pico, what have you brought to our table? 00:13.020 --> 00:16.265 A cooking pot! I heard that our bodies need iron. 00:16.280 --> 00:20.705 I found something made of metal and thought I had solved the mystery. 00:21.000 --> 00:22.585 But a pot is for cooking! 00:22.600 --> 00:29.625 It is not food. Could the same word have made us mix up two different things? 00:30.040 --> 00:33.465 Good question! Our bodies get iron from food. 00:33.480 --> 00:36.725 We do not eat metal objects. 00:36.740 --> 00:38.945 Let us put the cooking pot aside. 00:40.080 --> 00:43.575 All right, pot. You can wait in the kitchen! 00:43.590 --> 00:48.705 I will look for a better answer, without tasting anything made of metal. 00:50.000 --> 00:56.465 I have two cards. One shows lentils and one shows a cooking pot. 00:56.480 --> 00:59.345 Which one shows a food that can give us iron? 01:05.080 --> 01:07.655 The lentils! They contain iron. 01:07.670 --> 01:13.385 The word gave us a reason to ask a question, but we need evidence to answer it. 01:14.080 --> 01:15.665 First note in my notebook. 01:15.680 --> 01:19.045 The pot and the food are different things! 01:19.060 --> 01:21.665 And lentils are not tiny cooking pots. 01:22.100 --> 01:27.785 Look, Pico! Here are pictures of lentils, beans, fish and meat. 01:27.800 --> 01:32.465 Can iron be found in different kinds of food? 01:33.000 --> 01:35.765 Yes. These foods contain different amounts of iron. 01:35.780 --> 01:41.945 Each food has its own mixture of nutrients, so there is more to discover. 01:43.080 --> 01:45.425 I am looking at a lentil through my magnifying glass. 01:45.440 --> 01:48.285 There is no screw and no wire! 01:48.300 --> 01:50.305 Where is all that iron hiding? 01:51.020 --> 01:54.905 We cannot see the iron in food with this magnifying glass. 01:54.920 --> 01:59.465 Scientists use suitable measurements to study what the food contains. 02:00.000 --> 02:03.445 So the colour and shape do not tell us the whole story. 02:03.460 --> 02:08.385 We also need information that comes from reliable sources. 02:09.060 --> 02:11.685 Then my magnifying glass can take a little rest. 02:11.700 --> 02:14.085 I will open our food guide! 02:14.100 --> 02:16.425 When I do not know, I can investigate. 02:17.000 --> 02:19.805 We have found some foods with iron. 02:19.820 --> 02:22.225 Now I have another question. 02:22.240 --> 02:24.005 What does iron do in our bodies? 02:24.020 --> 02:26.105 Does it have a special job? 02:27.040 --> 02:32.165 It has several roles. One is connected with oxygen, a part of the 02:32.180 --> 02:34.185 air that our bodies need in order to work. 02:35.020 --> 02:37.145 Does oxygen come in when we breathe? 02:37.160 --> 02:39.345 And how does it reach everywhere? 02:39.360 --> 02:43.485 Does it need a tiny map with lots of routes? 02:44.080 --> 02:45.885 Our blood helps carry it. 02:45.900 --> 02:49.045 Inside red blood cells there is haemoglobin, a 02:49.060 --> 02:52.385 protein that carries oxygen through our bodies. 02:53.020 --> 02:58.625 Haemoglobin! That is a big word for a very useful job. 02:58.640 --> 03:02.025 And how does iron help this little transport team? 03:03.060 --> 03:05.745 Our bodies need iron to make haemoglobin. 03:05.760 --> 03:11.785 It carries oxygen from the lungs to different places in the body. 03:12.060 --> 03:16.205 I will draw red little boats carrying blue parcels! 03:16.220 --> 03:20.025 That will help me remember the job that they are doing. 03:21.060 --> 03:23.205 That is a useful comparison! 03:23.220 --> 03:25.325 It is only a drawing. 03:25.340 --> 03:29.545 There are no boats in our blood, and oxygen is not a blue parcel. 03:30.060 --> 03:33.495 I remember something from our colourful food friends. 03:33.510 --> 03:36.615 The pepper had vitamin C! 03:36.630 --> 03:39.345 Can it help in this story too? 03:40.000 --> 03:42.745 Yes! Vitamin C helps the body absorb iron from 03:42.760 --> 03:45.265 plant foods, such as lentils, more easily. 03:45.280 --> 03:46.945 Another example of teamwork! 03:48.020 --> 03:51.875 So I can put lentils and a pepper together in my picture. 03:51.890 --> 03:56.945 Not because they look alike, but because they can work together! 03:58.060 --> 04:00.765 And at mealtimes our grown-up helps us choose 04:00.780 --> 04:04.715 different foods that are right for us. 04:04.730 --> 04:07.185 No single food does every job. 04:08.040 --> 04:11.645 If I eat lots and lots of iron, will I become a super robot? 04:11.660 --> 04:14.805 Could I lift the whole lab with one finger? 04:16.080 --> 04:19.865 No, Pico! People do not turn into metal. 04:19.880 --> 04:21.745 More is not always better. 04:21.760 --> 04:25.745 Our bodies need the right amounts of nutrients. 04:26.020 --> 04:29.925 We can learn about food and ask questions. 04:29.940 --> 04:34.065 We never take pills or supplements by ourselves. 04:34.080 --> 04:37.185 Those are a grown-up's responsibility. 04:38.000 --> 04:42.735 I understand! My mission is to learn, not to count pills. 04:42.750 --> 04:46.625 My notebook is already filling up with interesting questions. 04:47.000 --> 04:49.425 Let us play with what we have learned. 04:49.440 --> 04:54.505 Does the iron in food turn us into robots, or help our bodies do useful jobs? 05:00.000 --> 05:04.365 It helps our bodies! I remember haemoglobin and oxygen. 05:04.380 --> 05:09.665 And I remember that the little boats were only a comparison. 05:10.000 --> 05:16.505 Second question! If a food does not shine like metal, can it still contain iron? 05:16.520 --> 05:18.025 Think about the lentils we saw. 05:24.000 --> 05:28.805 Of course! We do not decide by looking at colour or shine. 05:28.820 --> 05:32.225 We learn what food contains by using reliable information. 05:33.040 --> 05:34.905 At first I brought a cooking pot. 05:34.920 --> 05:37.205 Now I have a better explanation! 05:37.220 --> 05:40.485 It is all right to get mixed up and change my idea. 05:41.000 --> 05:44.275 And you helped all of us discover something together. 05:44.290 --> 05:46.825 That is what I like about exploring. 05:46.840 --> 05:49.465 One question can open a new path. 05:50.020 --> 05:54.805 Now it is your turn! With a grown-up, draw two foods we met today 05:54.820 --> 05:57.985 and talk about something that surprised you. 05:59.040 --> 06:03.215 You can also draw a question for our next visit to the lab. 06:03.230 --> 06:08.585 You do not need to taste any food to join the activity. 06:09.000 --> 06:11.695 I drew lentils and a pepper. 06:11.710 --> 06:15.785 And the pot is separate, in the kitchen! 06:15.800 --> 06:19.385 Everything in its place, and every question in my notebook. 06:20.000 --> 06:23.345 Well done, team! Time to close the screen and keep exploring together. 06:23.360 --> 06:27.515 I look, I ask, I discover! 06:27.530 --> 06:30.945 See you at the next why!