Curated Video
Low-Level Clouds
How do the clouds closest to the Earth affect our weather? How are they formed and what do they look like? Earth Science - Weather - Learning Points. Temperature, humidity and air pressure produce ten different types of cloud. Those at...
Curated Video
Algae: Diverse and Vital Organisms of Our Ecosystems
Discover the amazingly diverse world of algae. These species come in all shapes and sizes, and are one of the most important groups of organisms on our planet. Biology - Ecosystems - Learning Points. Algae produce more oxygen than all...
Curated Video
Fair Trade
Find out the principles underlying some of the most prominent Fair Trade schemes and how these can redress unequal relationships between small producers and global buyers. Human Geography - A Changing World - Learning Points. The...
Curated Video
We Are All Made of Stars
Discover how elements are formed in the centre of stars, and how some elements are formed in even more spectacular conditions. Chemistry - Periodic Table - Learning Points. Most elements were created in space. At the beginning of the...
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Dolly the Sheep
In 1997, Scottish scientists announced the first successful cloning of an adult animal - Dolly the Sheep. But her birth was mired in controversy. Biology - Cells And DNA - Learning Points. Dolly the sheep was the world's first clone....
Curated Video
Water as a Resource
As the global population increases, the supply of water doesn't. Explore how water is used, conserved and distributed, and why devastating water shortages threaten some communities. Earth Science - Earth's Resources - Learning Points....
Curated Video
Brazil: Agricultural Revolution
With global food need increasing, but less new agricultural land available, progressive agricultural methods are needed to feed the world. See some of those methods in action in Brazil. Human Geography - A Changing World - In the last...
Curated Video
Shockwaves: The Damage Caused by Supersonic Speeds
Discover the damage caused by shockwaves and how they are created by supersonic speeds. Physics - Waves - Learning Points. Waves of high pressure are produced when something moves through a medium at supersonic speed. At supersonic...
Curated Video
Rubens' Tube
We create a Rubens\u2019 Tube to demonstrate the movement of sound waves. A tube lined with holes is filled with propane and connected to a speaker. We light the gas coming from the holes and play different frequencies and volumes of...
Curated Video
Anaerobic Respiration: Observing Yeast's Oxygen-Free Energy Production
We use yeast to let us observe anaerobic respiration. The yeast is added to warm water and glucose. A layer of oil is placed over the solution so that no oxygen is available. The solution starts to bubble and the gas produced passes...
Curated Video
Flame Test
We use a Bunsen burner to burn different chemical salts to see how the flame colour changes. This shows that sodium burns with a yellow flame, lithium burns with a red flame, barium burns with a yellow-green flame and copper burns with a...
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Inflating Glove
We inflate a rubber glove using the gas produced during a neutralisation reaction. Bicarbonate of soda is added to vinegar in a beaker covered by a rubber glove and it expands. The gas is used to extinguish a flame, showing that it is...
Curated Video
Orange Tornado
We use mercury(II) chloride solution and potassium iodide to demonstrate a precipitation reaction. Saturated potassium iodide solution is placed on a magnetic stirrer and the speed is set so that a vortex is created. Mercury(II) chloride...
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Forces of Nature
Introducing the four main forces of nature: gravity, electromagnetic force, weak and strong nuclear forces. Learn why they are fundamental to life on Earth. Physics - Forces - Learning Points. There are four fundamental forces of nature....
Curated Video
MEDCs
How does a country come to be termed More Economically Developed? And why does this matter? Human Geography - A Changing World - Learning Points. More Economically Developed Country (MEDC) refers to a nation amongst the richest in the...
Curated Video
How Do Planes Fly?
Aeroplanes use the same forces and physical principles as birds to fly. Discover how man has copied nature to achieve flight. Physics - Forces - Learning Points. Flight occurs when the upward force (lift) is greater than the downward....
Curated Video
Biofuels
Can biofuels become the sustainable fuels of the future? Or does the energy used for their production, and impact on biodiversity mean they do more harm than good? Earth Science - Earth's Resources - Learning Points. Biofuel is cheap to...
Curated Video
Northern Lights
Discover how the chemical reactions which produce the extraordinary colours of the Northern Lights have their origins in outer space. Chemistry - Atoms And Bonding - Learning Points. Aurora Borealis, or Northern Lights, is a natural...
Curated Video
Cloning
A look at natural cloning and the main artificial cloning techniques devised by man, including embryo transplant and fusion cell cloning. Biology - Cells And DNA - Learning Points. Cloning occurs naturally in asexual reproduction in...
Curated Video
The Wind Power Debate
Despite being a clean, renewable source of energy, wind farms attract dissent. Discover the downside to the construction of wind farms and why some people are upset about their use. Earth Science - Earth's Resources - Learning Points....
Curated Video
Recombination
The process of moving a section of DNA from one DNA molecule to another. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Propulsion
The process of pushing or moving an object forwards. 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...
Curated Video
Species
The most basic unit in the classification of types of organisms. 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...
Curated Video
Wind Turbines - Wind Energy
Find out how wind turbines transform kinetic energy into electricity. People and places - Future of energy - The energy debate Learning Points Wind power is a renewable energy source. A Twig Context Film. Reinforce and extend the...