Know It All
Know It All
Know It All
Covering aspects of physics, chemistry, biology and maths, Know It All answers popular science questions in a fun way. In three-minute segments, it mixes ‘hard’ science with intriguing archive footage and off-beat graphics. More
Ends
Apr 17 2021
Lang
English
Subtitle
Eng
Duration
5 Minutes
Episodes
20
Classification
G
Available on
Now Player & TV
  • Know It All E20 -What\'s the Most Psychedelic Vegetable?
    EP20
    What's the Most Psychedelic Vegetable?

    A fractal is a pattern that keeps repeating itself at different scales. There are a lot of fractals in nature.

    Ends Apr 17 2021
  • Know It All E19 -What Makes Fireworks Bang?
    EP19
    What Makes Fireworks Bang?

    One of the most important components in fireworks is gunpowder. The different metal salts produce the colours.

    Ends Apr 17 2021
  • Know It All E18 -Could We Do Without Plankton?
    EP18
    Could We Do Without Plankton?

    Plankton are the foundations of the ocean food chain. Without them, pretty much nothing could survive.

    Ends Apr 17 2021
  • Know It All E17 -What Does Space Sound Like?
    EP17
    What Does Space Sound Like?

    Sound waves require a medium to travel through. Since space is a big empty void, there can’t be sound waves in space.

    Ends Apr 17 2021
  • Know It All E16 -Can Plants Count?
    EP16
    Can Plants Count?

    Each number in the Fibonacci sequence is the previous two numbers added together. This pattern can be seen in plants.

    Ends Apr 17 2021
  • Know It All E15 -What Makes Bread Rise?
    EP15
    What Makes Bread Rise?

    Bread rises thanks to a chemical reaction called fermentation and yeast.

    Ends Apr 17 2021
  • Know It All E14 -What\'s so Great About Mould?
    EP14
    What's so Great About Mould?

    Thanks to mould we have penicillin, an antibiotic which saved countless lives since it was discovered by Alexander Flemi

    Ends Apr 17 2021
  • Know It All E13 -What\'s Over the Rainbow?
    EP13
    What's Over the Rainbow?

    Rainbows are circular, but from the ground we can only see the upper arch.

    Ends Apr 17 2021
  • Know It All E12 -Do Bugs Have Lucky Numbers?
    EP12
    Do Bugs Have Lucky Numbers?

    The periodical cicada uses prime numbers to survive. It lives underground for 13 or 17 years before coming to surface.

    Ends Apr 17 2021
  • Know It All E11 -What Makes Chocolate so Tasty?
    EP11
    What Makes Chocolate so Tasty?

    During roasting, the Maillard reaction changes the bitter taste of cocoa beans to the chocolate flavour we love.

    Ends Apr 17 2021
  • Know It All E10 -Can Slime Think?
    EP10
    Can Slime Think?

    Slime mould are cleverer than they look even though they don’t have eyes, a skeleton, a nervous system, or even a brain.

    Ends Apr 17 2021
  • Know It All E9 -Can I Have Superhero Vision?
    EP9
    Can I Have Superhero Vision?

    X-Rays are a type of electromagnetic radiation. They were discovered in 1895 by Wilhelm Röntgen.

    Ends Apr 17 2021
  • Know It All E8 -Do Giants Like Hexagons?
    EP8
    Do Giants Like Hexagons?

    The Giant’s Causeway in Ireland is made up of around 40,000 interlocking basalt columns, most of which are hexagonal.

    Ends Apr 17 2021
  • Know It All E7 -How do Fish Glow in the Dark?
    EP7
    How do Fish Glow in the Dark?

    Bioluminescence is the ability of a living organism to create and emit light produced by a chemical reaction.

    Ends Apr 17 2021
  • Know It All E6 -Are Hot Springs Magical?
    EP6
    Are Hot Springs Magical?

    The Grand Prismatic Spring of Yellowstone National Park in the USA is a rainbow coloured hot spring.

    Ends Apr 17 2021
  • Know It All E5 -Are Bees Colour Blind?
    EP5
    Are Bees Colour Blind?

    Despite having five eyes, bees can’t see red. They can, however, see ultraviolet, which is invisible to us.

    Ends Apr 17 2021
  • Know It All E4 -How Did the Leopard Get its Spots?
    EP4
    How Did the Leopard Get its Spots?

    Alan Turing came up with a chemical theory of morphogenesis to explain why leopards have spots.

    Ends Apr 17 2021
  • Know It All E3 -Why Are Plants So Green?
    EP3
    Why Are Plants So Green?

    The chlorophyll in plants reflects the green wavelengths of sunlight back to us.

    Ends Apr 17 2021
  • Know It All E2 -Can Any Animal Survive in Space?
    EP2
    Can Any Animal Survive in Space?

    A Tardigrade is an aquatic micro-animal measuring around 1mm long.

    Ends Apr 17 2021
  • Know It All E1 -Why is the Sky Blue?
    EP1
    Why is the Sky Blue?

    The sun emits radiant energy called electromagnetic radiation. The blue sky we see is a form of this energy.

    Ends Apr 17 2021
 

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