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Threshold 1: The Big Bang

This short video offers an overview of The Big Bang - the unanswered questions about what preceded it, and the existence of space and time after it, as well as matter and energy. The forms that energy and matter then took is explained.

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Threshold 2: The Stars Light Up

This short video gives an overview of the emergence of the first atoms, hydrogen and helium, 380,000 years after the Big Bang. The effects of gravity led to tiny variations in the density of matter throughout the Universe, which in turn became heated, resulting in fusion and the emergence of the first stars, galaxies, and ...

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What emerged from the Big Bang?

This 13 minute video in 3 parts explains how the Big Bang theory developed by looking at the evidence that supports it, including Hubble's theory of the birth of the universe, Hoyle's naming of it and Einstein's theory of energy and matter. Part 2 looks at what happened after the Big Bang - the emergence of the 4 fundamental ...

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Our world: moons in our solar system

This is a NASA 'Our World' video clip focusing on the celestial objects that orbit the planets of the solar system. The narrators include an enthusiastic young student and a planetary scientist who provide intriguing information about a variety of moons. The presence of water on some moons raises the possibility that there ...

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Our world: communications in space

This is a NASA 'Our World' video clip focusing on the different ways that astronauts on the International Space Station use technology to communicate with ground staff and others on Earth. The narrators include the puppet Lily and actual astronauts on the space station. Different modes of communication include radio contact, ...

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Our world: the rock cycle

This is a NASA 'Our World' video clip focusing on how Moon rocks brought back to Earth by astronauts have helped scientists understand more about how the main rock types of the moon differ from those on Earth. The human narrator is accompanied by a cartoon character, and rocks dressed as puppets. The role of the rock cycle ...

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Our world: what is a solar system?

This is a NASA 'Our World' video clip exploring the largest objects found in the solar system. The narrators of the clip include an enthusiastic young student, a synthesised voice and an amateur astronomer who address the issues of what exactly is a solar system and how the major celestial objects making up our solar system ...

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Towards food security in Afghanistan

This is a video about the progress towards food and water security in Afghanistan. It includes images and information about how the global economic crisis has affected the people of Afghanistan; the value of investment in agriculture production to reduce poverty in this region; and a water security project that is jointly ...

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Vegetables Victoria: irrigation

This video of nearly 5 minutes includes interviews with vegetable growers who have been in the industry for a long time, talking about the development of irrigation systems in vegetable growing. They describe irrigation systems made up of galvanised pipes, hoses and sprinklers fed by mains water; how they had to move them ...

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Vegetables Victoria: soil health

This video of 6.5 minutes includes interviews with vegetable growers who have been in the industry for a long time, talking about the development of fertiliser practices from collecting manures and spreading them by hand to the use of chemical fertilisers. The farmers talk about the extra benefits of manures for soil health ...

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Marla Spivak: Why bees are disappearing

This is a video of a TED (Technology, Entertainment, Design) talk by Professor Marla Spivak about the dramatic decline in the number of bees. The 16-minute video begins with a discussion of why humans should care about bees, including their critical importance for the world's food supply. Professor Spivak explains that ...

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Farmers, their animals and the environment

This is a video about the valuable genetic diversity of Asia's indigenous domesticated animals; the contribution the animals' genes make to local people's food security; and the results of the use of genetic technologies. The video identifies ever-present links between farmers, their animals and the environment by describing ...

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Water reservoirs as climate change adaptation

This is a video about water availability for people living in the Peruvian Andes. It includes vision and information about water scarcity in this region and details of a Food and Agriculture Organization of the United Nations funded project involving the creation of a sustainable water management program. The program involves ...

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The Australian cotton story

This is a nine-minute video about cotton cultivation in Australia and cotton's importance for Australians. Intended for a mid to upper primary school audience, it depicts a family sowing, irrigating, spraying and harvesting cotton on their farm at Dalby, Queensland. It also illustrates the life cycle of the cotton plant ...

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TEDMED: What is the source of all life?

This is a video clip of a TEDMED speaker, Howard Shapiro, presenting ideas about improving the nutritional value of plants to address malnutrition and the food requirements of a growing world population. The clip emphasises that poor nutrition has negative health and developmental effects on children, particularly those ...

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Upholding cassava's potential in Africa

This is a video about the importance of cassava for food security in Africa and how the Regional Cassava Initiative supported small-scale farmers whose crops were affected by viral diseases. Plant virologist James Legg explains the extent of the problem and how the viruses are transmitted, and Burundi farmer Aoron Sebomana ...

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Gaps and opportunities for perennial crops

This is a video about the scientific breeding of perennial crops as described at a 2013 workshop, 'Perennial crops for food security', held by the Food and Agriculture Organization (FAO). After giving the big picture regarding perennial crop research, the 16-minute video focuses on the breeding of perennial wheat and its ...

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Keeping up with carbon

What is the carbon cycle and how does it affect climate? Find out in this fascinating clip from NASA, produced to celebrate Earth Science Week 2009.

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Discover how smell unlocks memory

Are there certain smells that remind you of particular people, places or events? Watch this clip to learn how smells unlock our memories. What are the parts of the brain responsible for processing smells and creating memories? And how do they relate to each other? How can we use this knowledge to improve our memories?

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How does nanotechnology work?

What is nanotechnology? Watch as Dr Kay Latham explains why scientists are interested in working at the nanoscale. What have researchers been able to design using their understanding of nanotechnology? And how might nanotechnology be used in the future?