WEBVTT 00:04.020 --> 00:09.215 Welcome to the Why Lab! Today there is a curious clanging sound. 00:09.230 --> 00:12.545 Pico, what have you brought to our table? 00:13.080 --> 00:15.865 A cooking pot! I heard that our bodies need iron. 00:15.880 --> 00:19.185 I found something made of metal and thought I had solved the mystery. 00:20.060 --> 00:21.825 But a pot is for cooking! 00:21.840 --> 00:28.065 It is not food. Could the same word have made us mix up two different things? 00:29.060 --> 00:32.955 Good question! Our bodies get iron from food. 00:32.970 --> 00:35.365 We do not eat metal objects. 00:35.380 --> 00:37.865 Let us put the cooking pot aside. 00:39.020 --> 00:42.025 All right, pot. You can wait in the kitchen! 00:42.040 --> 00:46.185 I will look for a better answer, without tasting anything made of metal. 00:47.080 --> 00:51.955 I have two cards. One shows lentils and one shows a cooking pot. 00:51.970 --> 00:55.145 Which one shows a food that can give us iron? 01:01.040 --> 01:04.735 The lentils! They contain iron. 01:04.750 --> 01:10.745 The word gave us a reason to ask a question, but we need evidence to answer it. 01:11.080 --> 01:12.675 First note in my notebook. 01:12.690 --> 01:15.745 The pot and the food are different things! 01:15.760 --> 01:19.205 And lentils are not tiny cooking pots. 01:20.000 --> 01:24.455 Look, Pico! Here are pictures of lentils, beans, fish and meat. 01:24.470 --> 01:26.945 Can iron be found in different kinds of food? 01:28.040 --> 01:31.745 Yes. These foods contain different amounts of iron. 01:31.760 --> 01:36.305 Each food has its own mixture of nutrients, so there is more to discover. 01:37.060 --> 01:39.795 I am looking at a lentil through my magnifying glass. 01:39.810 --> 01:42.875 There is no screw and no wire! 01:42.890 --> 01:44.745 Where is all that iron hiding? 01:46.020 --> 01:49.815 We cannot see the iron in food with this magnifying glass. 01:49.830 --> 01:54.625 Scientists use suitable measurements to study what the food contains. 01:55.020 --> 01:58.105 So the colour and shape do not tell us the whole story. 01:58.120 --> 02:01.665 We also need information that comes from reliable sources. 02:02.020 --> 02:04.875 Then my magnifying glass can take a little rest. 02:04.890 --> 02:06.875 I will open our food guide! 02:06.890 --> 02:09.385 When I do not know, I can investigate. 02:10.040 --> 02:11.925 We have found some foods with iron. 02:11.940 --> 02:14.165 Now I have another question. 02:14.180 --> 02:16.445 What does iron do in our bodies? 02:16.460 --> 02:18.145 Does it have a special job? 02:19.100 --> 02:24.245 It has several roles. One is connected with oxygen, a part of the 02:24.260 --> 02:26.745 air that our bodies need in order to work. 02:27.040 --> 02:29.115 Does oxygen come in when we breathe? 02:29.130 --> 02:31.325 And how does it reach everywhere? 02:31.340 --> 02:34.465 Does it need a tiny map with lots of routes? 02:35.000 --> 02:37.125 Our blood helps carry it. 02:37.140 --> 02:41.245 Inside red blood cells there is haemoglobin, a 02:41.260 --> 02:43.945 protein that carries oxygen through our bodies. 02:45.020 --> 02:49.135 Haemoglobin! That is a big word for a very useful job. 02:49.150 --> 02:52.625 And how does iron help this little transport team? 02:53.080 --> 02:56.125 Our bodies need iron to make haemoglobin. 02:56.140 --> 03:00.185 It carries oxygen from the lungs to different places in the body. 03:01.020 --> 03:05.185 I will draw red little boats carrying blue parcels! 03:05.200 --> 03:08.345 That will help me remember the job that they are doing. 03:09.000 --> 03:11.065 That is a useful comparison! 03:11.080 --> 03:12.915 It is only a drawing. 03:12.930 --> 03:17.705 There are no boats in our blood, and oxygen is not a blue parcel. 03:18.080 --> 03:20.845 I remember something from our colourful food friends. 03:20.860 --> 03:23.185 The pepper had vitamin C! 03:23.200 --> 03:25.105 Can it help in this story too? 03:26.080 --> 03:29.505 Yes! Vitamin C helps the body absorb iron from 03:29.520 --> 03:32.665 plant foods, such as lentils, more easily. 03:32.680 --> 03:35.105 Another example of teamwork! 03:36.000 --> 03:39.295 So I can put lentils and a pepper together in my picture. 03:39.310 --> 03:43.525 Not because they look alike, but because they can work together! 03:44.060 --> 03:46.185 And at mealtimes our grown-up helps us choose 03:46.200 --> 03:48.455 different foods that are right for us. 03:48.470 --> 03:50.785 No single food does every job. 03:51.020 --> 03:55.715 If I eat lots and lots of iron, will I become a super robot? 03:55.730 --> 03:58.745 Could I lift the whole lab with one finger? 03:59.000 --> 04:02.735 No, Pico! People do not turn into metal. 04:02.750 --> 04:05.775 More is not always better. 04:05.790 --> 04:08.825 Our bodies need the right amounts of nutrients. 04:09.040 --> 04:11.235 We can learn about food and ask questions. 04:11.250 --> 04:14.885 We never take pills or supplements by ourselves. 04:14.900 --> 04:16.745 Those are a grown-up's responsibility. 04:17.000 --> 04:21.405 I understand! My mission is to learn, not to count pills. 04:21.420 --> 04:24.845 My notebook is already filling up with interesting questions. 04:26.020 --> 04:28.605 Let us play with what we have learned. 04:28.620 --> 04:35.425 Does the iron in food turn us into robots, or help our bodies do useful jobs? 04:41.020 --> 04:45.085 It helps our bodies! I remember haemoglobin and oxygen. 04:45.100 --> 04:48.985 And I remember that the little boats were only a comparison. 04:50.020 --> 04:55.815 Second question! If a food does not shine like metal, can it still contain iron? 04:55.830 --> 04:57.825 Think about the lentils we saw. 05:04.060 --> 05:08.935 Of course! We do not decide by looking at colour or shine. 05:08.950 --> 05:13.425 We learn what food contains by using reliable information. 05:14.020 --> 05:16.095 At first I brought a cooking pot. 05:16.110 --> 05:17.955 Now I have a better explanation! 05:17.970 --> 05:21.605 It is all right to get mixed up and change my idea. 05:22.020 --> 05:24.625 And you helped all of us discover something together. 05:24.640 --> 05:26.905 That is what I like about exploring. 05:26.920 --> 05:29.225 One question can open a new path. 05:30.020 --> 05:34.805 Now it is your turn! With a grown-up, draw two foods we met today 05:34.820 --> 05:37.505 and talk about something that surprised you. 05:38.000 --> 05:40.865 You can also draw a question for our next visit to the lab. 05:40.880 --> 05:44.225 You do not need to taste any food to join the activity. 05:45.040 --> 05:47.285 I drew lentils and a pepper. 05:47.300 --> 05:49.825 And the pot is separate, in the kitchen! 05:49.840 --> 05:53.685 Everything in its place, and every question in my notebook. 05:54.040 --> 05:59.485 Well done, team! Time to close the screen and keep exploring together. 05:59.500 --> 06:03.455 I look, I ask, I discover! 06:03.470 --> 06:05.425 See you at the next why!