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A trick of misdirection using just a few plastic bottles and some balloons. Try it for yourself and bamboozle your friends with this easy trick that also demonstrates the science behind air pressure.

Find out why toilets save lives and what the United Nations is aiming for when it comes to sanitation. Imagine life without working toilets? How many people in the world live without toilets and proper sanitation? Why is it dangerous to not have sanitation around drinking water and washing water?

Watch and learn about the history of the television. When was television first invented? What did the first transmission look like? How has television changed over the years? Why is television important?

Clare shows us how to grow vegetables using only water. What is this form of gardening known as? What other vegetables or plants might grow well using this method? Try it for yourself using a potato, lettuce or even an onion. All you need is a glass, water, some toothpicks and of course sunlight.

Clare tells us all about how humans grow from the time we are babies. What are some important things we need in order to grow? Does everyone grow in the same way? Why or why not? Which parts of our body grow the fastest? How tall was the tallest man ever recorded?

Let's Talk About Sects podcast producer Sarah Steel joins Weekend Today to discuss some of the reasons people join cults and why they sometimes find it difficult to leave.

Can you pat your tummy and rub your head at the same time? What about if you swap hands? Was it easier or harder? Have a go at Clare's fun and tricky physical challenges and see how we can trick our senses and eventually retrain our brains.

You may know the 5 senses, but did you know that balance is also one of our bodies' senses? Try these centre of balance tricks and see if you can do better than the Brainbuzz challengers.

Learn all about the 'Great Air Race' from England to Australia in 1919. What did Ross and Keith Smith do during World War I? Whose idea was it to challenge pilots to fly from England to Australia in 30 days? Why was it a dangerous challenge? What were the planes made from in those days? What was the name of the type of plane the Smith brothers flew in the challenge? What were the four roles of the men in the aeroplane?

Find out why the air pollution is so bad in Delhi and how young people are coping in the smoggy conditions. What are the environmental factors contributing to the pollution? What are some of the actions being taken to lessen the pollution? Why are the young people in the video feeling frustrated?

The Brainbuzz team make two kinds of slime; borax slime and cornflour slime. Which do you prefer? Which slime is the 'non-newtonian' slime? Do you know of any other non-newtonian fluids that appear solid when moved quickly and liquid when moved slowly?

How do we see colour? Why do we see different colours? Why is an orange orange? Which parts of the eye allow us to see objects as different colours? Watch this clip and find out all the answers!

Different colours absorb and reflect different wavelengths of light. Because light it energy this makes some colours absorb heat and some reflect heat. Which colours absorb heat? Which colour is best for reflecting heat? Watch and learn!

A hurricane is spinning air that causes destruction due to the force it creates. Dr Joel shows us how to make our own spinning air machine or 'vortex generator' using only a bucket, scissors, tape and clear plastic. If you can get an adult to help you, you can even make it visible by adding smoke from a smoke machine. Have a go for yourself then try to knock over some cups. How far does the air from your generator reach?

Did you know there are two categories of planets; terrestrial and jovian? Watch and find out more about the planets, such as, what they are made of and which planets support rings and many moons. Also, learn how the solar system came to be.

Miguel's Grandmother takes him to the ofrenda room and explains the reasons and beliefs behind placing the photos and food out on Dia De Los Muertas. What else can you see on the ofrenda (altar)? According to Miguel's Grandmother, why is Dia De Los Muertas so important? What happens if the photos are not placed on the ofrenda? Why is Miguel trying to run away for the evening?

Miguel and Hector wow the audience with their performance of 'Poco Loco', meanwhile Miguel's family are on his tail.