Food Farmer Earth
Connecting Soil Health and Public Nutrition: Perspectives from a Grape Grower
Learn from a grape grower about the crucial link between soil health and public health. Discover how embracing a balanced approach to soil chemistry, biology, and physics can lead to better food quality and improved health outcomes.
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Tornado Warning: Survive Nature's Wildest Winds
The awesome and devastating power of tornadoes is unlike any other that Mother Nature dishes out. The largest among them, known as EF5s, produce winds in excess of 200 mph and can span two miles across. We discuss the surprising fact...
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Reaction
A chemical change in which chemical bonds are broken, and new bonds are formed, to produce a new chemical substance. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Ionisation
The process of stripping electrons from, or adding them to, atoms or molecules to produce charged ions. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Bunsen burner
A small gas burner commonly used in laboratories for heating and sterilising. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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Precipitate
A solid that forms in a liquid solution. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
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Amplification of DNA
Producing many identical copies of a DNA sequence, by laboratory processes, such as the polymerase chain reaction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Motor effect
The force experienced by a current-carrying wire when placed within a magnetic field. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
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Fermentation: Converting Carbohydrates into Other Products
The process by which microorganisms can convert carbohydrates into other products. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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First Synthetic Pigment
The story of how a contaminated reaction in the early 1700s led to the accidental discovery of blue pigment, the first synthetic paint. Chemistry - Reactions - Learning Points. In the 1700s, paints were colored using naturally occurring...
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Musical Instruments
Different instruments can produce a wide variety of different sounds and notes, but why is this? Revealing how scientific principles combine to make music. Physics - Waves - Learning Points. Musical instruments are designed based on the...
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Resonance: How Sound Changes Across Different Mediums
Sounds can change as they move from one medium to another. Under the right circumstances the effect is surprising and extreme. Physics - Waves - Learning Points. Sound is a wave that is created by vibrating objects. Every object has a...
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Electricity: Supply and Demand
As demand for electricity rises, supply can become jeopardised. With electricity difficult to store, how to power companies manage this delicate balancing act? Earth Science - Earth's Resources - Learning Points. Electricity producers...
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Melatonin and Sleep
Melatonin regulates our sleep cycle and during puberty this hormone becomes imbalanced. Could this be why teenagers are moody? Biology - Being Human - Learning Points. The hormone melatonin regulates the circadian rhythm - the body's...
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Marine Renewables
Wave and tidal power are a developing form of renewable energy. How do they work and what makes them desirable alternatives to other forms of renewable energy? Earth Science - Earth's Resources - Learning Points. The Atlantic Ocean and...
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Earthly Treasures: Precious Gemstones
Discover the specific conditions needed for the formation of emeralds, rubies and sapphires; and how there is now potential to 'grow' them in laboratories. Earth Science - Geology - Learning Points. Emeralds are made from beryllium....
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Bottled Water: The True Cost
What is the expense, and environmental cost, of bottling water when tap water is freely available? Earth Science - Earth's Resources - Learning Points. Bottled water is up to 10,000 times more expensive than tap water. Bottled water has...
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Asexual Reproduction in Plants
Some plants don't need both a male and female to reproduce - they can do it alone. Which plants can do this and how do they manage it? Biology - Plants - Learning Points. Plants use a variety of methods to reproduce. Methods include...
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Acids and Alkalis: Part 2
Alkalis and acids can be neutralised to great and varied effect. For example, it is neutralisation reactions that help us breathe underwater or cure indigestion. Chemistry - Reactions - Learning Points. A neutral solution is pH 7 Sodium...
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Making a Star on Earth
Large-scale nuclear fusion is one of the ultimate goals of science which has yet to be achieved. How does nuclear fusion work and is a future likely in which we can reproduce the power of a star on Earth? Earth Science - Earth's...
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Eco-Transport
The transport industry is one of the leading polluters in the world today. What technologies are being developed to create cleaner transportation and what are their advantages and disadvantages? Earth Science - Earth's Resources -...
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Pollution: Land
How does land get polluted, and what with? Discover the quantities of waste deposited in landfills each year, and just how much could be recycled. Earth Science - Human Impacts - Learning Points. Landfills are holes in the ground where...
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AC, DC and Transformers
Power loss affects electricity supply, especially to homes far from power stations. Why is power lost, and how is electricity effectively transported over long distances? Physics - Electricity And Circuits - Learning Points. Direct...
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Feeding the Planet
As the world's population grows, how will we cope with the increasing demand for food? What would happen in a food crisis, and what can be done to prevent one? Human Geography - A Changing World - Learning Points. As the population of...