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Thinning ice sheet

Discover that that the massive ice sheet in East Antarctica has been losing mass since 2006 instead of growing, as was previously thought. Watch animations to see how scientists from NASA and Australia are using satellite technology and aerial monitoring to investigate the thickness of East Antarctica's ice sheet. Find ...

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Climate and bushfires in Australia

What can science tell us about the major cause of bushfires in Australia's past? How can it help us predict future bushfires? Two scientists discuss evidence related to bushfire regimes (bushfire patterns, types and intensity). Please note that this clip contains recent images of homes destroyed by fire that may disturb ...

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Accelerating glaciers in Antarctica

Discover a white world in which glaciers are racing toward the sea at seven times their normal speed. This is what is happening in Antarctica now and the consequences will eventually be felt at your nearest beach. Travel with scientist Dr Paul Williams to see some stunning images of what is occurring around the fringes ...

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Building models of organic molecules

Have you seen the model of long-chain carbon molecules first developed by Friedrich August Kekulé? This model enabled chemists to make a great leap forward in their understanding of the structure of organic molecules. See how to represent the structure of methane, ethane, propane, butane and octane. Find out how to rearrange ...

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Vitalism disproved through evidence

Discover how the scientific theory of vitalism, championed by the Swedish chemist Jöns Berzelius, was disproved by his former student Friedrich Wöhler. Find out the way chemists study how the different atoms in organic compounds combine in set ratios depending on the 'valence' of those atoms.

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Large Hadron Collider discovery, 2012

Have you heard of the Large Hadron Collider (LHC)? Watch this clip to find out about a scientific discovery at the LHC that left physicists uncharacteristically emotional. Catalyst's Dr Derek Muller takes you inside the LHC and talks to scientists there about the discovery of the Higgs boson and what it means for our understanding ...

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Organic compounds and substitution theory

Discover how the burning of candles at a Royal Ball in Paris in 1834 led to a scientific discovery vital to our understanding of chemical reactions. Watch this clip to find out about substitution theory and how a diverse array of compounds can be created from an organic starting point of hydrogen and carbon.

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Organelles inside cells

Explore what scientists believe is the origin of some organelles, such as mitochondria, inside eukaryotic cells. Consider why eukaryotes are thought of as cells within cells.

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Origin of chemical life on Earth

Evidence suggests that four billion years ago Earth was a barren planet with vast lifeless oceans. Have you ever wondered how life began? Watch how a classic experiment, first conducted by Miller and Urey in the 1950s, is recreated and used to present one theory; that reactions between atmospheric gases gave rise to the ...

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Cyanobacteria and evolution of life

For two billion years Earth was dominated by single-celled microbes. Cyanobacteria (also called blue-green algae) were amongst these early pioneers of life on Earth. Find out about the crucial role of cyanobacteria in the formation of Earth's biosphere and the evolution of more complex life forms.

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The beginning of industrial chemistry

What did an 18-year-old college student have to do with the very beginning of industrial chemistry? Watch this clip to find out how an unexpected discovery made him rich and famous.

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Outer electrons of atoms

Atoms with 'clothes', orbital zones, valency, and the strange and distinctive shapes created by electrons: explore all of these and more in this clip. You will also discover how electrons in the outer layers of an atom form the basis of chemistry.

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Manipulating organic compounds

Chemists often try to alter or mimic compounds found in the natural environment, to create safe and useful drugs. But the end result isn't always beneficial, and some very harmful drugs have been created along the way. Watch this clip to find out more.

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Square Kilometre Array (SKA), 2011

Find out about Australia's super science project - the Square Kilometre Array (SKA). Listen to astronomy experts discuss Australia's bid to be the home of the world's first SKA (telescope). See the telescope Australian scientists built to demonstrate their technological capabilities and help secure the bid. Find out what ...

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Carbon's electron structure

Did you know that diamonds are made of carbon atoms? Explore the characteristic features of the diamond molecule and find out more about carbon's important properties. You will also see how carbon's position on the periodic table influences the way it bonds, and how the discovery of glucose was made.

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Arctic ice melting

What do you think might be causing the big sea ice melt in the Arctic? Is it a natural phenomenon or is something else occurring? Watch this short clip to find out what scientists think is happening to the ice in the Arctic.

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Below Earth's crust

Imagine tunnelling deep, deep below the Earth's surface. What do you think you would find thousands of kilometres down? Watch this clip to find out what is inside the Earth, what it's made up of and how hot it is. Find out about earthquakes, volcanoes, and geysers, and how they help us to understand about the composition ...

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How old is our Earth?

Have you ever thought about how old planet Earth is? Watch this clip to discover the age of the Earth, and the fast and slow changes that have been happening since its beginning. Find out about English scientist Charles Lyell and how his observations shaped our understanding of the Earth's geology today. The enormous scale ...

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Greenhouse effect tips toward climate catastrophe

Follow the carbon atom, the central character in this story about oil, as it is released as carbon dioxide into the atmosphere and contributes to the greenhouse effect. See how other events like melting glaciers amplify that effect and contribute to an increasingly overheated climate. Learn about what might tip us over ...

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Oil from super-greenhouse events

Why did most of the world's oil deposits form at a specific prehistoric time? Learn how overheated super-greenhouse climates caused vast stretches of the world's oceans to stagnate and become depleted of oxygen. Discover the connection between these anoxic events and Earth's oil reserves. Watch scientists investigating ...